20715712 has 28 divisors (see below), whose sum is σ = 41367456. Its totient is φ = 10292480.

The previous prime is 20715703. The next prime is 20715713. The reversal of 20715712 is 21751702.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20715713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10137 + ... + 12007.

Almost surely, 2^20715712 is an apocalyptic number.

It is an amenable number.

20715712 is a deficient number, since it is larger than the sum of its proper divisors (20651744).

20715712 is a wasteful number, since it uses less digits than its factorization.

20715712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056 (or 2046 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 20715712 is about 4551.4516365661. The cubic root of 20715712 is about 274.6417903550.

The spelling of 20715712 in words is "twenty million, seven hundred fifteen thousand, seven hundred twelve".