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64902054 = 2371545287
BaseRepresentation
bin1111011110010…
…1001110100110
311112010100212210
43313211032212
5113103331204
610235024250
71415441550
oct367451646
9145110783
1064902054
11336a9968
121989b086
13105a52a9
1488964d0
155a70389
hex3de53a6

64902054 has 16 divisors (see below), whose sum is σ = 148347648. Its totient is φ = 18543432.

The previous prime is 64902011. The next prime is 64902083. The reversal of 64902054 is 45020946.

It is a super-2 number, since 2×649020542 = 8424553226837832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772602 + ... + 772685.

It is an arithmetic number, because the mean of its divisors is an integer number (9271728).

Almost surely, 264902054 is an apocalyptic number.

64902054 is an abundant number, since it is smaller than the sum of its proper divisors (83445594).

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

64902054 is a wasteful number, since it uses less digits than its factorization.

64902054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545299.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 64902054 is about 8056.1811052136. The cubic root of 64902054 is about 401.8705184340.

The spelling of 64902054 in words is "sixty-four million, nine hundred two thousand, fifty-four".

Divisors: 1 2 3 6 7 14 21 42 1545287 3090574 4635861 9271722 10817009 21634018 32451027 64902054