20713268 has 24 divisors (see below), whose sum is σ = 38304000. Its totient is φ = 9773568.

The previous prime is 20713261. The next prime is 20713289. The reversal of 20713268 is 86231702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20713268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20713261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33821 + ... + 34427.

It is an arithmetic number, because the mean of its divisors is an integer number (1596000).

Almost surely, 2^20713268 is an apocalyptic number.

It is an amenable number.

20713268 is a deficient number, since it is larger than the sum of its proper divisors (17590732).

20713268 is a wasteful number, since it uses less digits than its factorization.

20713268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20713268 is about 4551.1831428761. The cubic root of 20713268 is about 274.6309893595.

The spelling of 20713268 in words is "twenty million, seven hundred thirteen thousand, two hundred sixty-eight".