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61282470 = 2352042749
BaseRepresentation
bin1110100111000…
…1100010100110
311021022110202010
43221301202212
5111142014340
610025255050
71342615044
oct351614246
9137273663
1061282470
1131657477
1218634486
13c908922
1481d3394
1555a7b80
hex3a718a6

61282470 has 16 divisors (see below), whose sum is σ = 147078000. Its totient is φ = 16341984.

The previous prime is 61282427. The next prime is 61282477. The reversal of 61282470 is 7428216.

61282470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×612824702 = 7511082258601800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2042749 = 61282470 / (6 + 1 + 2 + 8 + 2 + 4 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61282477) 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 7 ways as a sum of consecutive naturals, for example, 1021345 + ... + 1021404.

It is an arithmetic number, because the mean of its divisors is an integer number (9192375).

Almost surely, 261282470 is an apocalyptic number.

61282470 is an abundant number, since it is smaller than the sum of its proper divisors (85795530).

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

61282470 is a wasteful number, since it uses less digits than its factorization.

61282470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042759.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 61282470 is about 7828.3120786029. The cubic root of 61282470 is about 394.2564016001.

The spelling of 61282470 in words is "sixty-one million, two hundred eighty-two thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 2042749 4085498 6128247 10213745 12256494 20427490 30641235 61282470