20713372 has 12 divisors (see below), whose sum is σ = 36292536. Its totient is φ = 10344080.

The previous prime is 20713369. The next prime is 20713373. The reversal of 20713372 is 27331702.

It is a super-2 number, since 2×20713372² = 858087559220768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20713373) by changing a digit.

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, 1218 + ... + 6550.

It is an arithmetic number, because the mean of its divisors is an integer number (3024378).

Almost surely, 2^20713372 is an apocalyptic number.

It is an amenable number.

20713372 is a deficient number, since it is larger than the sum of its proper divisors (15579164).

20713372 is a wasteful number, since it uses less digits than its factorization.

20713372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308 (or 6306 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 20713372 is about 4551.1945684622. The cubic root of 20713372 is about 274.6314489937.

The spelling of 20713372 in words is "twenty million, seven hundred thirteen thousand, three hundred seventy-two".