20740568 has 16 divisors (see below), whose sum is σ = 40230000. Its totient is φ = 10012576.

The previous prime is 20740553. The next prime is 20740579. The reversal of 20740568 is 86504702.

It is a congruent number.

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, 44468 + ... + 44931.

It is an arithmetic number, because the mean of its divisors is an integer number (2514375).

Almost surely, 2^20740568 is an apocalyptic number.

It is an amenable number.

20740568 is a deficient number, since it is larger than the sum of its proper divisors (19489432).

20740568 is a wasteful number, since it uses less digits than its factorization.

20740568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89434 (or 89430 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 20740568 is about 4554.1813753956. The cubic root of 20740568 is about 274.7515905536.

The spelling of 20740568 in words is "twenty million, seven hundred forty thousand, five hundred sixty-eight".