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72864084 = 22318133547
BaseRepresentation
bin1000101011111…
…01000101010100
312002002212201210
410111331011110
5122123122314
611121421420
71543222506
oct425750524
9162085653
1072864084
1138147957
122049a870
1312132357
149969d76
1565e4559
hex457d154

72864084 has 24 divisors (see below), whose sum is σ = 170960608. Its totient is φ = 24153120.

The previous prime is 72864079. The next prime is 72864133. The reversal of 72864084 is 48046827.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 14602 + ... + 18945.

Almost surely, 272864084 is an apocalyptic number.

It is an amenable number.

72864084 is an abundant number, since it is smaller than the sum of its proper divisors (98096524).

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

72864084 is a wasteful number, since it uses less digits than its factorization.

72864084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33735 (or 33733 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 72864084 is about 8536.0461573260. The cubic root of 72864084 is about 417.6743799266.

The spelling of 72864084 in words is "seventy-two million, eight hundred sixty-four thousand, eighty-four".

Divisors: 1 2 3 4 6 12 181 362 543 724 1086 2172 33547 67094 100641 134188 201282 402564 6072007 12144014 18216021 24288028 36432042 72864084