21246692 has 12 divisors (see below), whose sum is σ = 38088876. Its totient is φ = 10364160.

The previous prime is 21246689. The next prime is 21246707. The reversal of 21246692 is 29664212.

It can be written as a sum of positive squares in 2 ways, for example, as 306916 + 20939776 = 554^2 + 4576^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64613 + ... + 64940.

It is an arithmetic number, because the mean of its divisors is an integer number (3174073).

Almost surely, 2^21246692 is an apocalyptic number.

It is an amenable number.

21246692 is a deficient number, since it is larger than the sum of its proper divisors (16842184).

21246692 is a wasteful number, since it uses less digits than its factorization.

21246692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129598 (or 129596 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 21246692 is about 4609.4134117044. The cubic root of 21246692 is about 276.9685393942.

The spelling of 21246692 in words is "twenty-one million, two hundred forty-six thousand, six hundred ninety-two".