21052096 has 28 divisors (see below), whose sum is σ = 44990512. Its totient is φ = 9715968.

The previous prime is 21052091. The next prime is 21052111. The reversal of 21052096 is 69025012.

It is a self number, because there is not a number n which added to its sum of digits gives 21052096.

It is not an unprimeable number, because it can be changed into a prime (21052091) 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, 11820 + ... + 13483.

It is an arithmetic number, because the mean of its divisors is an integer number (1606804).

Almost surely, 2^21052096 is an apocalyptic number.

21052096 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21052096 is an abundant number, since it is smaller than the sum of its proper divisors (23938416).

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

21052096 is a wasteful number, since it uses less digits than its factorization.

21052096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25328 (or 25318 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 21052096 is about 4588.2563136773. The cubic root of 21052096 is about 276.1203703762.

The spelling of 21052096 in words is "twenty-one million, fifty-two thousand, ninety-six".