21292468 has 12 divisors (see below), whose sum is σ = 37294432. Its totient is φ = 10636920.

The previous prime is 21292441. The next prime is 21292471. The reversal of 21292468 is 86429212.

It is a congruent number.

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, 6721 + ... + 9367.

Almost surely, 2^21292468 is an apocalyptic number.

It is an amenable number.

21292468 is a deficient number, since it is larger than the sum of its proper divisors (16001964).

21292468 is a wasteful number, since it uses less digits than its factorization.

21292468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662 (or 4660 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 21292468 is about 4614.3762308680. The cubic root of 21292468 is about 277.1673062965.

The spelling of 21292468 in words is "twenty-one million, two hundred ninety-two thousand, four hundred sixty-eight".