21023192 has 32 divisors (see below), whose sum is σ = 40532400. Its totient is φ = 10218624.

The previous prime is 21023183. The next prime is 21023207. The reversal of 21023192 is 29132012.

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, 75758 + ... + 76034.

Almost surely, 2^21023192 is an apocalyptic number.

It is an amenable number.

21023192 is a deficient number, since it is larger than the sum of its proper divisors (19509208).

21023192 is a wasteful number, since it uses less digits than its factorization.

21023192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 21023192 is about 4585.1054513501. The cubic root of 21023192 is about 275.9939437164.

The spelling of 21023192 in words is "twenty-one million, twenty-three thousand, one hundred ninety-two".