20713332 has 24 divisors (see below), whose sum is σ = 49891072. Its totient is φ = 6681600.

The previous prime is 20713321. The next prime is 20713369. The reversal of 20713332 is 23331702.

It is a junction number, because it is equal to n+sod(n) for n = 20713299 and 20713308.

It is a congruent number.

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, 27469 + ... + 28212.

Almost surely, 2^20713332 is an apocalyptic number.

It is an amenable number.

20713332 is an abundant number, since it is smaller than the sum of its proper divisors (29177740).

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

20713332 is a wasteful number, since it uses less digits than its factorization.

20713332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55719 (or 55717 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 20713332 is about 4551.1901740094. The cubic root of 20713332 is about 274.6312722115.

The spelling of 20713332 in words is "twenty million, seven hundred thirteen thousand, three hundred thirty-two".