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72715793 = 195576871
BaseRepresentation
bin1000101010110…
…00111000010001
312001211100022112
410111120320101
5122103401133
611114315105
71542034253
oct425307021
9161740275
1072715793
11380564a7
1220428a95
13120ac9c7
14992bcd3
1565b5648
hex4558e11

72715793 has 8 divisors (see below), whose sum is σ = 76691520. Its totient is φ = 68754960.

The previous prime is 72715781. The next prime is 72715813. The reversal of 72715793 is 39751727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72715793 - 26 = 72715729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72715793.

It is not an unprimeable number, because it can be changed into a prime (72715723) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7148 + ... + 14018.

It is an arithmetic number, because the mean of its divisors is an integer number (9586440).

Almost surely, 272715793 is an apocalyptic number.

It is an amenable number.

72715793 is a deficient number, since it is larger than the sum of its proper divisors (3975727).

72715793 is a wasteful number, since it uses less digits than its factorization.

72715793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447.

The product of its digits is 92610, while the sum is 41.

The square root of 72715793 is about 8527.3555689909. The cubic root of 72715793 is about 417.3908409804.

The spelling of 72715793 in words is "seventy-two million, seven hundred fifteen thousand, seven hundred ninety-three".

Divisors: 1 19 557 6871 10583 130549 3827147 72715793