72253880 has 16 divisors (see below), whose sum is σ = 162571320. Its totient is φ = 28901536.

The previous prime is 72253871. The next prime is 72253897. The reversal of 72253880 is 8835227.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72253880.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903134 + ... + 903213.

Almost surely, 2^72253880 is an apocalyptic number.

It is an amenable number.

72253880 is an abundant number, since it is smaller than the sum of its proper divisors (90317440).

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

72253880 is a wasteful number, since it uses less digits than its factorization.

72253880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806358 (or 1806354 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 72253880 is about 8500.2282322300. The cubic root of 72253880 is about 416.5051647870.

The spelling of 72253880 in words is "seventy-two million, two hundred fifty-three thousand, eight hundred eighty".