20138160 has 80 divisors (see below), whose sum is σ = 71352576. Its totient is φ = 4602624.

The previous prime is 20138159. The next prime is 20138171. The reversal of 20138160 is 6183102.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4314 + ... + 7673.

Almost surely, 2^20138160 is an apocalyptic number.

20138160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20138160 is an abundant number, since it is smaller than the sum of its proper divisors (51214416).

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

20138160 is a wasteful number, since it uses less digits than its factorization.

20138160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12010 (or 12004 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20138160 is about 4487.5561277827. The cubic root of 20138160 is about 272.0653677957.

The spelling of 20138160 in words is "twenty million, one hundred thirty-eight thousand, one hundred sixty".