72881232 has 20 divisors (see below), whose sum is σ = 188276640. Its totient is φ = 24293728.

The previous prime is 72881219. The next prime is 72881233. The reversal of 72881232 is 23218827.

It is a junction number, because it is equal to n+sod(n) for n = 72881193 and 72881202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72881233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759132 + ... + 759227.

It is an arithmetic number, because the mean of its divisors is an integer number (9413832).

Almost surely, 2^72881232 is an apocalyptic number.

It is an amenable number.

72881232 is an abundant number, since it is smaller than the sum of its proper divisors (115395408).

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

72881232 is a wasteful number, since it uses less digits than its factorization.

72881232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518370 (or 1518364 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 72881232 is about 8537.0505445382. The cubic root of 72881232 is about 417.7071428375.

The spelling of 72881232 in words is "seventy-two million, eight hundred eighty-one thousand, two hundred thirty-two".