21485562 has 32 divisors (see below), whose sum is σ = 49410432. Its totient is φ = 6101184.

The previous prime is 21485557. The next prime is 21485587. The reversal of 21485562 is 26558412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5788 + ... + 8744.

It is an arithmetic number, because the mean of its divisors is an integer number (1544076).

Almost surely, 2^21485562 is an apocalyptic number.

21485562 is an abundant number, since it is smaller than the sum of its proper divisors (27924870).

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

21485562 is a wasteful number, since it uses less digits than its factorization.

21485562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142.

The product of its digits is 19200, while the sum is 33.

The square root of 21485562 is about 4635.2520967041. The cubic root of 21485562 is about 278.0026309638.

The spelling of 21485562 in words is "twenty-one million, four hundred eighty-five thousand, five hundred sixty-two".