21485492 has 12 divisors (see below), whose sum is σ = 42971040. Its totient is φ = 9208056.

The previous prime is 21485489. The next prime is 21485507. The reversal of 21485492 is 29458412.

21485492 is an admirable number.

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, 383642 + ... + 383697.

It is an arithmetic number, because the mean of its divisors is an integer number (3580920).

Almost surely, 2^21485492 is an apocalyptic number.

It is an amenable number.

21485492 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21485492 is a wasteful number, since it uses less digits than its factorization.

21485492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767350 (or 767348 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 21485492 is about 4635.2445458681. The cubic root of 21485492 is about 278.0023290525.

The spelling of 21485492 in words is "twenty-one million, four hundred eighty-five thousand, four hundred ninety-two".