21275796 has 24 divisors (see below), whose sum is σ = 51245824. Its totient is φ = 6863040.

The previous prime is 21275747. The next prime is 21275809. The reversal of 21275796 is 69757212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28225 + ... + 28968.

Almost surely, 2^21275796 is an apocalyptic number.

It is an amenable number.

21275796 is an abundant number, since it is smaller than the sum of its proper divisors (29970028).

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

21275796 is a wasteful number, since it uses less digits than its factorization.

21275796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57231 (or 57229 counting only the distinct ones).

The product of its digits is 52920, while the sum is 39.

The square root of 21275796 is about 4612.5693490722. The cubic root of 21275796 is about 277.0949467510.

The spelling of 21275796 in words is "twenty-one million, two hundred seventy-five thousand, seven hundred ninety-six".