72718870 has 96 divisors (see below), whose sum is σ = 164726784. Its totient is φ = 22587840.

The previous prime is 72718859. The next prime is 72718883. The reversal of 72718870 is 7881727.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1547187 + ... + 1547233.

It is an arithmetic number, because the mean of its divisors is an integer number (1715904).

Almost surely, 2^72718870 is an apocalyptic number.

72718870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72718870 is an abundant number, since it is smaller than the sum of its proper divisors (92007914).

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

72718870 is a wasteful number, since it uses less digits than its factorization.

72718870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 40.

The square root of 72718870 is about 8527.5359864383. The cubic root of 72718870 is about 417.3967282549.

The spelling of 72718870 in words is "seventy-two million, seven hundred eighteen thousand, eight hundred seventy".