21893022 has 48 divisors (see below), whose sum is σ = 48901632. Its totient is φ = 7076160.

The previous prime is 21893009. The next prime is 21893051. The reversal of 21893022 is 22039812.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139368 + ... + 139524.

It is an arithmetic number, because the mean of its divisors is an integer number (1018784).

Almost surely, 2^21893022 is an apocalyptic number.

21893022 is an abundant number, since it is smaller than the sum of its proper divisors (27008610).

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

21893022 is a wasteful number, since it uses less digits than its factorization.

21893022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 21893022 is about 4678.9979696512. The cubic root of 21893022 is about 279.7490182937.

The spelling of 21893022 in words is "twenty-one million, eight hundred ninety-three thousand, twenty-two".