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61074816 = 2731119761
BaseRepresentation
bin1110100011111…
…0110110000000
311020220220220020
43220332312000
5111113343231
610021013440
71341061455
oct350766600
9136826806
1061074816
1131525460
1218554280
13c86525a
14817b82c
155566396
hex3a3ed80

61074816 has 128 divisors (see below), whose sum is σ = 186537600. Its totient is φ = 17510400.

The previous prime is 61074809. The next prime is 61074817. The reversal of 61074816 is 61847016.

It is a happy number.

61074816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61074817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79876 + ... + 80636.

It is an arithmetic number, because the mean of its divisors is an integer number (1457325).

Almost surely, 261074816 is an apocalyptic number.

61074816 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61074816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93268800).

61074816 is an abundant number, since it is smaller than the sum of its proper divisors (125462784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61074816 is a wasteful number, since it uses less digits than its factorization.

61074816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 61074816 is about 7815.0378118087. The cubic root of 61074816 is about 393.8105886104.

The spelling of 61074816 in words is "sixty-one million, seventy-four thousand, eight hundred sixteen".

Divisors: 1 2 3 4 6 8 11 12 16 19 22 24 32 33 38 44 48 57 64 66 76 88 96 114 128 132 152 176 192 209 228 264 304 352 384 418 456 528 608 627 704 761 836 912 1056 1216 1254 1408 1522 1672 1824 2112 2283 2432 2508 3044 3344 3648 4224 4566 5016 6088 6688 7296 8371 9132 10032 12176 13376 14459 16742 18264 20064 24352 25113 26752 28918 33484 36528 40128 43377 48704 50226 57836 66968 73056 80256 86754 97408 100452 115672 133936 146112 159049 173508 200904 231344 267872 292224 318098 347016 401808 462688 477147 535744 636196 694032 803616 925376 954294 1071488 1272392 1388064 1607232 1850752 1908588 2544784 2776128 3214464 3817176 5089568 5552256 7634352 10179136 15268704 20358272 30537408 61074816