72257910 has 32 divisors (see below), whose sum is σ = 174694752. Its totient is φ = 19127040.

The previous prime is 72257909. The next prime is 72257947. The reversal of 72257910 is 1975227.

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 15 ways as a sum of consecutive naturals, for example, 4681 + ... + 12900.

It is an arithmetic number, because the mean of its divisors is an integer number (5459211).

Almost surely, 2^72257910 is an apocalyptic number.

72257910 is an abundant number, since it is smaller than the sum of its proper divisors (102436842).

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

72257910 is a wasteful number, since it uses less digits than its factorization.

72257910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17728.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 72257910 is about 8500.4652813831. The cubic root of 72257910 is about 416.5129082448.

The spelling of 72257910 in words is "seventy-two million, two hundred fifty-seven thousand, nine hundred ten".