20933632 has 22 divisors (see below), whose sum is σ = 41848868. Its totient is φ = 10466304.

The previous prime is 20933629. The next prime is 20933639. The reversal of 20933632 is 23633902.

It is a super-2 number, since 2×20933632² = 876433897422848, 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 20933632.

It is not an unprimeable number, because it can be changed into a prime (20933639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9198 + ... + 11245.

Almost surely, 2^20933632 is an apocalyptic number.

It is an amenable number.

20933632 is a deficient number, since it is larger than the sum of its proper divisors (20915236).

20933632 is an equidigital number, since it uses as much as digits as its factorization.

20933632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20463 (or 20445 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 20933632 is about 4575.3286220773. The cubic root of 20933632 is about 275.6014692060.

The spelling of 20933632 in words is "twenty million, nine hundred thirty-three thousand, six hundred thirty-two".