21325696 has 32 divisors (see below), whose sum is σ = 48556080. Its totient is φ = 9139200.

The previous prime is 21325693. The next prime is 21325739. The reversal of 21325696 is 69652312.

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 (21325693) 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, 11005 + ... + 12796.

Almost surely, 2^21325696 is an apocalyptic number.

It is an amenable number.

21325696 is an abundant number, since it is smaller than the sum of its proper divisors (27230384).

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

21325696 is an equidigital number, since it uses as much as digits as its factorization.

21325696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23822 (or 23810 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 21325696 is about 4617.9753139228. The cubic root of 21325696 is about 277.3114093451.

The spelling of 21325696 in words is "twenty-one million, three hundred twenty-five thousand, six hundred ninety-six".