72967515 has 32 divisors (see below), whose sum is σ = 121613376. Its totient is φ = 37324800.

The previous prime is 72967511. The next prime is 72967549. The reversal of 72967515 is 51576927.

It is not a de Polignac number, because 72967515 - 2² = 72967511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72967511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39615 + ... + 41415.

It is an arithmetic number, because the mean of its divisors is an integer number (3800418).

Almost surely, 2^72967515 is an apocalyptic number.

72967515 is a deficient number, since it is larger than the sum of its proper divisors (48645861).

72967515 is a wasteful number, since it uses less digits than its factorization.

72967515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919.

The product of its digits is 132300, while the sum is 42.

The square root of 72967515 is about 8542.1024929463. The cubic root of 72967515 is about 417.8719169087.

The spelling of 72967515 in words is "seventy-two million, nine hundred sixty-seven thousand, five hundred fifteen".