72557076 has 24 divisors (see below), whose sum is σ = 171445120. Its totient is φ = 23879232.

The previous prime is 72557059. The next prime is 72557077. The reversal of 72557076 is 67075527.

It is a super-3 number, since 3×72557076³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72557077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37321 + ... + 39216.

Almost surely, 2^72557076 is an apocalyptic number.

It is an amenable number.

72557076 is an abundant number, since it is smaller than the sum of its proper divisors (98888044).

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

72557076 is a wasteful number, since it uses less digits than its factorization.

72557076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76623 (or 76621 counting only the distinct ones).

The product of its (nonzero) digits is 102900, while the sum is 39.

The square root of 72557076 is about 8518.0441417030. The cubic root of 72557076 is about 417.0869396447.

The spelling of 72557076 in words is "seventy-two million, five hundred fifty-seven thousand, seventy-six".