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61002260 = 22511416763
BaseRepresentation
bin1110100010110…
…1001000010100
311020210020100222
43220231020110
5111104033020
610015253512
71340340104
oct350551024
9136706328
1061002260
11314859a0
121851a298
13c83b217
14815d204
15554eb25
hex3a2d214

61002260 has 48 divisors (see below), whose sum is σ = 143180352. Its totient is φ = 21638400.

The previous prime is 61002247. The next prime is 61002281. The reversal of 61002260 is 6220016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5639 + ... + 12401.

It is an arithmetic number, because the mean of its divisors is an integer number (2982924).

Almost surely, 261002260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61002260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71590176).

61002260 is an abundant number, since it is smaller than the sum of its proper divisors (82178092).

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

61002260 is a wasteful number, since it uses less digits than its factorization.

61002260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6824 (or 6822 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 61002260 is about 7810.3943562409. The cubic root of 61002260 is about 393.6545797166.

Adding to 61002260 its reverse (6220016), we get a palindrome (67222276).

The spelling of 61002260 in words is "sixty-one million, two thousand, two hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 41 44 55 82 110 164 205 220 410 451 820 902 1804 2255 4510 6763 9020 13526 27052 33815 67630 74393 135260 148786 277283 297572 371965 554566 743930 1109132 1386415 1487860 2772830 3050113 5545660 6100226 12200452 15250565 30501130 61002260