72255232 has 72 divisors (see below), whose sum is σ = 167787872. Its totient is φ = 30412800.

The previous prime is 72255229. The next prime is 72255241. The reversal of 72255232 is 23255227.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 72255232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108982 + ... + 109642.

Almost surely, 2^72255232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72255232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83893936).

72255232 is an abundant number, since it is smaller than the sum of its proper divisors (95532640).

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

72255232 is an equidigital number, since it uses as much as digits as its factorization.

72255232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 731 counting only the distinct ones).

The product of its digits is 8400, while the sum is 28.

The square root of 72255232 is about 8500.3077591344. The cubic root of 72255232 is about 416.5077626243.

The spelling of 72255232 in words is "seventy-two million, two hundred fifty-five thousand, two hundred thirty-two".