72907974 has 24 divisors (see below), whose sum is σ = 158979600. Its totient is φ = 24146928.

The previous prime is 72907969. The next prime is 72907987. The reversal of 72907974 is 47970927.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10074 + ... + 15725.

It is an arithmetic number, because the mean of its divisors is an integer number (6624150).

Almost surely, 2^72907974 is an apocalyptic number.

72907974 is an abundant number, since it is smaller than the sum of its proper divisors (86071626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72907974 is a wasteful number, since it uses less digits than its factorization.

72907974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25964 (or 25961 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 72907974 is about 8538.6166326871. The cubic root of 72907974 is about 417.7582257576.

The spelling of 72907974 in words is "seventy-two million, nine hundred seven thousand, nine hundred seventy-four".