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72758996 = 2238034783
BaseRepresentation
bin1000101011000…
…11011011010100
312001220112120122
410111203123110
5122111241441
611115251112
71542304232
oct425433324
9161815518
1072758996
1138085a02
1220449a98
13120c657b
14993d952
1565c334b
hex45636d4

72758996 has 12 divisors (see below), whose sum is σ = 127388352. Its totient is φ = 36362328.

The previous prime is 72758993. The next prime is 72759019. The reversal of 72758996 is 69985727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72758993) 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 3 ways as a sum of consecutive naturals, for example, 12821 + ... + 17603.

It is an arithmetic number, because the mean of its divisors is an integer number (10615696).

Almost surely, 272758996 is an apocalyptic number.

It is an amenable number.

72758996 is a deficient number, since it is larger than the sum of its proper divisors (54629356).

72758996 is a wasteful number, since it uses less digits than its factorization.

72758996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8590 (or 8588 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 53.

The square root of 72758996 is about 8529.8883931737. Note that the first 3 decimals coincide. The cubic root of 72758996 is about 417.4734867885.

The spelling of 72758996 in words is "seventy-two million, seven hundred fifty-eight thousand, nine hundred ninety-six".

Divisors: 1 2 4 3803 4783 7606 9566 15212 19132 18189749 36379498 72758996