20880032 has 24 divisors (see below), whose sum is σ = 41985216. Its totient is φ = 10217152.

The previous prime is 20880007. The next prime is 20880043. The reversal of 20880032 is 23008802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5438 + ... + 8445.

It is an arithmetic number, because the mean of its divisors is an integer number (1749384).

Almost surely, 2^20880032 is an apocalyptic number.

It is an amenable number.

20880032 is an abundant number, since it is smaller than the sum of its proper divisors (21105184).

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

20880032 is a wasteful number, since it uses less digits than its factorization.

20880032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13940 (or 13932 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20880032 is about 4569.4673650219. The cubic root of 20880032 is about 275.3660447833.

Adding to 20880032 its reverse (23008802), we get a palindrome (43888834).

The spelling of 20880032 in words is "twenty million, eight hundred eighty thousand, thirty-two".