21196160 has 32 divisors (see below), whose sum is σ = 50673600. Its totient is φ = 8478208.

The previous prime is 21196159. The next prime is 21196169. The reversal of 21196160 is 6169112.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21196169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15920 + ... + 17199.

It is an arithmetic number, because the mean of its divisors is an integer number (1583550).

Almost surely, 2^21196160 is an apocalyptic number.

21196160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21196160 is an abundant number, since it is smaller than the sum of its proper divisors (29477440).

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

21196160 is an equidigital number, since it uses as much as digits as its factorization.

21196160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33138 (or 33126 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 21196160 is about 4603.9287570509. The cubic root of 21196160 is about 276.7487893500.

The spelling of 21196160 in words is "twenty-one million, one hundred ninety-six thousand, one hundred sixty".