21485422 has 24 divisors (see below), whose sum is σ = 37674720. Its totient is φ = 9162720.

The previous prime is 21485413. The next prime is 21485437. The reversal of 21485422 is 22458412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26154 + ... + 26962.

It is an arithmetic number, because the mean of its divisors is an integer number (1569780).

Almost surely, 2^21485422 is an apocalyptic number.

21485422 is a deficient number, since it is larger than the sum of its proper divisors (16189298).

21485422 is a wasteful number, since it uses less digits than its factorization.

21485422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1089 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

The square root of 21485422 is about 4635.2369950198. The cubic root of 21485422 is about 278.0020271405.

The spelling of 21485422 in words is "twenty-one million, four hundred eighty-five thousand, four hundred twenty-two".