72774015 has 16 divisors (see below), whose sum is σ = 116726400. Its totient is φ = 38716832.

The previous prime is 72773983. The next prime is 72774041. The reversal of 72774015 is 51047727.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 72774015 - 2⁵ = 72773983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496 + ... + 12074.

It is an arithmetic number, because the mean of its divisors is an integer number (7295400).

Almost surely, 2^72774015 is an apocalyptic number.

72774015 is a deficient number, since it is larger than the sum of its proper divisors (43952385).

72774015 is a wasteful number, since it uses less digits than its factorization.

72774015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12006.

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 72774015 is about 8530.7687226885. The cubic root of 72774015 is about 417.5022099397.

The spelling of 72774015 in words is "seventy-two million, seven hundred seventy-four thousand, fifteen".