20872604 has 6 divisors (see below), whose sum is σ = 36527064. Its totient is φ = 10436300.

The previous prime is 20872603. The next prime is 20872613. The reversal of 20872604 is 40627802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20872601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2609072 + ... + 2609079.

It is an arithmetic number, because the mean of its divisors is an integer number (6087844).

Almost surely, 2^20872604 is an apocalyptic number.

It is an amenable number.

20872604 is a deficient number, since it is larger than the sum of its proper divisors (15654460).

20872604 is a wasteful number, since it uses less digits than its factorization.

20872604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218155 (or 5218153 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 20872604 is about 4568.6545065260. The cubic root of 20872604 is about 275.3333874007. Note that the first 4 decimals are identical.

The spelling of 20872604 in words is "twenty million, eight hundred seventy-two thousand, six hundred four".