21476712 has 32 divisors (see below), whose sum is σ = 56851200. Its totient is φ = 6737664.

The previous prime is 21476699. The next prime is 21476723. The reversal of 21476712 is 21767412.

It is a super-2 number, since 2×21476712² = 922498316661888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21476712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25912 + ... + 26727.

It is an arithmetic number, because the mean of its divisors is an integer number (1776600).

Almost surely, 2^21476712 is an apocalyptic number.

It is an amenable number.

21476712 is an abundant number, since it is smaller than the sum of its proper divisors (35374488).

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

21476712 is a wasteful number, since it uses less digits than its factorization.

21476712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52665 (or 52661 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 21476712 is about 4634.2973577448. The cubic root of 21476712 is about 277.9644555422.

The spelling of 21476712 in words is "twenty-one million, four hundred seventy-six thousand, seven hundred twelve".