21410924 has 6 divisors (see below), whose sum is σ = 37469124. Its totient is φ = 10705460.

The previous prime is 21410911. The next prime is 21410933. The reversal of 21410924 is 42901412.

It is a self number, because there is not a number n which added to its sum of digits gives 21410924.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2676362 + ... + 2676369.

It is an arithmetic number, because the mean of its divisors is an integer number (6244854).

Almost surely, 2^21410924 is an apocalyptic number.

It is an amenable number.

21410924 is a deficient number, since it is larger than the sum of its proper divisors (16058200).

21410924 is a wasteful number, since it uses less digits than its factorization.

21410924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352735 (or 5352733 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 21410924 is about 4627.1939661095. The cubic root of 21410924 is about 277.6803426922.

The spelling of 21410924 in words is "twenty-one million, four hundred ten thousand, nine hundred twenty-four".