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64160404 = 22721129759
BaseRepresentation
bin1111010011000…
…0001010010100
311110201200112021
43310300022110
5112411113104
610211102524
71406232400
oct364601224
9143650467
1064160404
1133242730
12195a1a44
13103a5849
148742100
155975754
hex3d30294

64160404 has 36 divisors (see below), whose sum is σ = 142490880. Its totient is φ = 24996720.

The previous prime is 64160399. The next prime is 64160417. The reversal of 64160404 is 40406146.

It is a nialpdrome in base 14.

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 11 ways as a sum of consecutive naturals, for example, 12724 + ... + 17035.

It is an arithmetic number, because the mean of its divisors is an integer number (3958080).

Almost surely, 264160404 is an apocalyptic number.

It is an amenable number.

64160404 is an abundant number, since it is smaller than the sum of its proper divisors (78330476).

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

64160404 is a wasteful number, since it uses less digits than its factorization.

64160404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29788 (or 29779 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 64160404 is about 8010.0189762572. The cubic root of 64160404 is about 400.3338962058. Note that the first 3 decimals are identical.

The spelling of 64160404 in words is "sixty-four million, one hundred sixty thousand, four hundred four".

Divisors: 1 2 4 7 11 14 22 28 44 49 77 98 154 196 308 539 1078 2156 29759 59518 119036 208313 327349 416626 654698 833252 1309396 1458191 2291443 2916382 4582886 5832764 9165772 16040101 32080202 64160404