20715368 has 16 divisors (see below), whose sum is σ = 39574980. Its totient is φ = 10162048.

The previous prime is 20715349. The next prime is 20715407. The reversal of 20715368 is 86351702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16144324 + 4571044 = 4018^2 + 2138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24005 + ... + 24852.

Almost surely, 2^20715368 is an apocalyptic number.

It is an amenable number.

20715368 is a deficient number, since it is larger than the sum of its proper divisors (18859612).

20715368 is a wasteful number, since it uses less digits than its factorization.

20715368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48916 (or 48912 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 20715368 is about 4551.4138462680. The cubic root of 20715368 is about 274.6402701353.

The spelling of 20715368 in words is "twenty million, seven hundred fifteen thousand, three hundred sixty-eight".