20799736 has 16 divisors (see below), whose sum is σ = 39094200. Its totient is φ = 10374624.

The previous prime is 20799733. The next prime is 20799739. The reversal of 20799736 is 63799702.

It is an interprime number because it is at equal distance from previous prime (20799733) and next prime (20799739).

It is a junction number, because it is equal to n+sod(n) for n = 20799692 and 20799701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20799731) 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 3 ways as a sum of consecutive naturals, for example, 610 + ... + 6478.

Almost surely, 2^20799736 is an apocalyptic number.

It is an amenable number.

20799736 is a deficient number, since it is larger than the sum of its proper divisors (18294464).

20799736 is a wasteful number, since it uses less digits than its factorization.

20799736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6318 (or 6314 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 20799736 is about 4560.6727573901. The cubic root of 20799736 is about 275.0126098901.

The spelling of 20799736 in words is "twenty million, seven hundred ninety-nine thousand, seven hundred thirty-six".