72889656 has 48 divisors (see below), whose sum is σ = 211978440. Its totient is φ = 20825280.

The previous prime is 72889651. The next prime is 72889657. The reversal of 72889656 is 65698827.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 72889599 and 72889608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72889651) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 29815 + ... + 32166.

Almost surely, 2^72889656 is an apocalyptic number.

It is an amenable number.

72889656 is an abundant number, since it is smaller than the sum of its proper divisors (139088784).

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

72889656 is a wasteful number, since it uses less digits than its factorization.

72889656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62004 (or 61993 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 72889656 is about 8537.5439091111. The cubic root of 72889656 is about 417.7232358211.

The spelling of 72889656 in words is "seventy-two million, eight hundred eighty-nine thousand, six hundred fifty-six".