20912160 has 96 divisors (see below), whose sum is σ = 69370560. Its totient is φ = 5280768.

The previous prime is 20912149. The next prime is 20912189. The reversal of 20912160 is 6121902.

It is a tau number, because it is divible by the number of its divisors (96).

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, 7974 + ... + 10266.

It is an arithmetic number, because the mean of its divisors is an integer number (722610).

Almost surely, 2^20912160 is an apocalyptic number.

20912160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20912160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34685280).

20912160 is an abundant number, since it is smaller than the sum of its proper divisors (48458400).

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

20912160 is a wasteful number, since it uses less digits than its factorization.

20912160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330 (or 2322 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 20912160 is about 4572.9815219395. The cubic root of 20912160 is about 275.5072071878.

The spelling of 20912160 in words is "twenty million, nine hundred twelve thousand, one hundred sixty".