20713269 has 8 divisors (see below), whose sum is σ = 27721440. Its totient is φ = 13756976.

The previous prime is 20713261. The next prime is 20713289. The reversal of 20713269 is 96231702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20713269 - 2³ = 20713261 is a prime.

It is a super-2 number, since 2×20713269² = 858079025332722, which contains 22 as substring.

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 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, 12027 + ... + 13640.

It is an arithmetic number, because the mean of its divisors is an integer number (3465180).

Almost surely, 2^20713269 is an apocalyptic number.

It is an amenable number.

20713269 is a deficient number, since it is larger than the sum of its proper divisors (7008171).

20713269 is a wasteful number, since it uses less digits than its factorization.

20713269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25939.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20713269 is about 4551.1832527377. The cubic root of 20713269 is about 274.6309937791.

The spelling of 20713269 in words is "twenty million, seven hundred thirteen thousand, two hundred sixty-nine".