20870832 has 40 divisors (see below), whose sum is σ = 57090096. Its totient is φ = 6547456.

The previous prime is 20870813. The next prime is 20870869. The reversal of 20870832 is 23807802.

It is a self number, because there is not a number n which added to its sum of digits gives 20870832.

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, 11973 + ... + 13604.

Almost surely, 2^20870832 is an apocalyptic number.

It is an amenable number.

20870832 is an abundant number, since it is smaller than the sum of its proper divisors (36219264).

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

20870832 is a wasteful number, since it uses less digits than its factorization.

20870832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25605 (or 25599 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20870832 is about 4568.4605722278. The cubic root of 20870832 is about 275.3255956151.

The spelling of 20870832 in words is "twenty million, eight hundred seventy thousand, eight hundred thirty-two".