20768396 has 24 divisors (see below), whose sum is σ = 40723536. Its totient is φ = 9184320.

The previous prime is 20768393. The next prime is 20768399. The reversal of 20768396 is 69386702.

It is an interprime number because it is at equal distance from previous prime (20768393) and next prime (20768399).

It is not an unprimeable number, because it can be changed into a prime (20768393) 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, 4751 + ... + 8006.

It is an arithmetic number, because the mean of its divisors is an integer number (1696814).

Almost surely, 2^20768396 is an apocalyptic number.

It is an amenable number.

20768396 is a deficient number, since it is larger than the sum of its proper divisors (19955140).

20768396 is a wasteful number, since it uses less digits than its factorization.

20768396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12809 (or 12807 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 20768396 is about 4557.2355655595. The cubic root of 20768396 is about 274.8744153851.

The spelling of 20768396 in words is "twenty million, seven hundred sixty-eight thousand, three hundred ninety-six".