72928587215 has 32 divisors (see below), whose sum is σ = 101411481600. Its totient is φ = 49758323200.

The previous prime is 72928587211. The next prime is 72928587217. The reversal of 72928587215 is 51278582927.

It is not a de Polignac number, because 72928587215 - 2² = 72928587211 is a prime.

It is a super-2 number, since 2×72928587215² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72928587211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165386 + ... + 416184.

It is an arithmetic number, because the mean of its divisors is an integer number (3169108800).

Almost surely, 2^72928587215 is an apocalyptic number.

72928587215 is a deficient number, since it is larger than the sum of its proper divisors (28482894385).

72928587215 is a wasteful number, since it uses less digits than its factorization.

72928587215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251143.

The product of its digits is 5644800, while the sum is 56.

The spelling of 72928587215 in words is "seventy-two billion, nine hundred twenty-eight million, five hundred eighty-seven thousand, two hundred fifteen".