20713532 has 24 divisors (see below), whose sum is σ = 41652576. Its totient is φ = 8828928.

The previous prime is 20713529. The next prime is 20713541. The reversal of 20713532 is 23531702.

It is a junction number, because it is equal to n+sod(n) for n = 20713498 and 20713507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3488 + ... + 7320.

It is an arithmetic number, because the mean of its divisors is an integer number (1735524).

Almost surely, 2^20713532 is an apocalyptic number.

It is an amenable number.

20713532 is an abundant number, since it is smaller than the sum of its proper divisors (20939044).

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

20713532 is a wasteful number, since it uses less digits than its factorization.

20713532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037 (or 4035 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 20713532 is about 4551.2121462309. The cubic root of 20713532 is about 274.6321561201.

The spelling of 20713532 in words is "twenty million, seven hundred thirteen thousand, five hundred thirty-two".