20318768 has 10 divisors (see below), whose sum is σ = 39367644. Its totient is φ = 10159376.

The previous prime is 20318761. The next prime is 20318797. The reversal of 20318768 is 86781302.

It is not an unprimeable number, because it can be changed into a prime (20318761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634946 + ... + 634977.

Almost surely, 2^20318768 is an apocalyptic number.

It is an amenable number.

20318768 is a deficient number, since it is larger than the sum of its proper divisors (19048876).

20318768 is a wasteful number, since it uses less digits than its factorization.

20318768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269931 (or 1269925 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 20318768 is about 4507.6344128600. The cubic root of 20318768 is about 272.8762829071.

The spelling of 20318768 in words is "twenty million, three hundred eighteen thousand, seven hundred sixty-eight".