32556972 has 72 divisors (see below), whose sum is σ = 93595824. Its totient is φ = 8752128.

The previous prime is 32556949. The next prime is 32557009. The reversal of 32556972 is 27965523.

It is a self number, because there is not a number n which added to its sum of digits gives 32556972.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8368 + ... + 11624.

It is an arithmetic number, because the mean of its divisors is an integer number (1299942).

Almost surely, 2^32556972 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 32556972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46797912).

32556972 is an abundant number, since it is smaller than the sum of its proper divisors (61038852).

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

32556972 is a wasteful number, since it uses less digits than its factorization.

32556972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3295 (or 3286 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 32556972 is about 5705.8717125431. The cubic root of 32556972 is about 319.3115799511.

The spelling of 32556972 in words is "thirty-two million, five hundred fifty-six thousand, nine hundred seventy-two".