20799036 has 18 divisors (see below), whose sum is σ = 52575432. Its totient is φ = 6933000.

The previous prime is 20799029. The next prime is 20799043. The reversal of 20799036 is 63099702.

It is an interprime number because it is at equal distance from previous prime (20799029) and next prime (20799043).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 577751 = 20799036 / (2 + 0 + 7 + 9 + 9 + 0 + 3 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288840 + ... + 288911.

Almost surely, 2^20799036 is an apocalyptic number.

It is an amenable number.

20799036 is an abundant number, since it is smaller than the sum of its proper divisors (31776396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20799036 is a wasteful number, since it uses less digits than its factorization.

20799036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577761 (or 577756 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 20799036 is about 4560.5960136807. The cubic root of 20799036 is about 275.0095247390.

The spelling of 20799036 in words is "twenty million, seven hundred ninety-nine thousand, thirty-six".