21359332 has 12 divisors (see below), whose sum is σ = 37937200. Its totient is φ = 10520136.

The previous prime is 21359329. The next prime is 21359353. The reversal of 21359332 is 23395312.

It is a self number, because there is not a number n which added to its sum of digits gives 21359332.

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 3 ways as a sum of consecutive naturals, for example, 39582 + ... + 40117.

Almost surely, 2^21359332 is an apocalyptic number.

It is an amenable number.

21359332 is a deficient number, since it is larger than the sum of its proper divisors (16577868).

21359332 is a wasteful number, since it uses less digits than its factorization.

21359332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79770 (or 79768 counting only the distinct ones).

The product of its digits is 4860, while the sum is 28.

The square root of 21359332 is about 4621.6157347837. The cubic root of 21359332 is about 277.4571294323.

The spelling of 21359332 in words is "twenty-one million, three hundred fifty-nine thousand, three hundred thirty-two".