20162904 has 32 divisors (see below), whose sum is σ = 52600320. Its totient is φ = 6428576.

The previous prime is 20162899. The next prime is 20162911. The reversal of 20162904 is 40926102.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 17712 + ... + 18815.

It is an arithmetic number, because the mean of its divisors is an integer number (1643760).

Almost surely, 2^20162904 is an apocalyptic number.

20162904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20162904 is an abundant number, since it is smaller than the sum of its proper divisors (32437416).

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

20162904 is a wasteful number, since it uses less digits than its factorization.

20162904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36559 (or 36555 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20162904 is about 4490.3122385865. The cubic root of 20162904 is about 272.1767521876.

The spelling of 20162904 in words is "twenty million, one hundred sixty-two thousand, nine hundred four".