72707768 has 32 divisors (see below), whose sum is σ = 158988000. Its totient is φ = 31159296.

The previous prime is 72707753. The next prime is 72707773. The reversal of 72707768 is 86770727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10505 + ... + 15992.

It is an arithmetic number, because the mean of its divisors is an integer number (4968375).

Almost surely, 2^72707768 is an apocalyptic number.

It is an amenable number.

72707768 is an abundant number, since it is smaller than the sum of its proper divisors (86280232).

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

72707768 is a wasteful number, since it uses less digits than its factorization.

72707768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26524 (or 26506 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 44.

The square root of 72707768 is about 8526.8850115385. The cubic root of 72707768 is about 417.3754858349.

The spelling of 72707768 in words is "seventy-two million, seven hundred seven thousand, seven hundred sixty-eight".