72554868 has 36 divisors (see below), whose sum is σ = 189729540. Its totient is φ = 23350656.

The previous prime is 72554851. The next prime is 72554873. The reversal of 72554868 is 86845527.

It can be written as a sum of positive squares in 2 ways, for example, as 25522704 + 47032164 = 5052^2 + 6858^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33705 + ... + 35792.

It is an arithmetic number, because the mean of its divisors is an integer number (5270265).

Almost surely, 2^72554868 is an apocalyptic number.

It is an amenable number.

72554868 is an abundant number, since it is smaller than the sum of its proper divisors (117174672).

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

72554868 is a wasteful number, since it uses less digits than its factorization.

72554868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69536 (or 69531 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 72554868 is about 8517.9145334994. The cubic root of 72554868 is about 417.0827087810.

The spelling of 72554868 in words is "seventy-two million, five hundred fifty-four thousand, eight hundred sixty-eight".