20794572 has 18 divisors (see below), whose sum is σ = 52564148. Its totient is φ = 6931512.

The previous prime is 20794559. The next prime is 20794573. The reversal of 20794572 is 27549702.

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: 577627 = 20794572 / (2 + 0 + 7 + 9 + 4 + 5 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (20794573) 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 5 ways as a sum of consecutive naturals, for example, 288778 + ... + 288849.

Almost surely, 2^20794572 is an apocalyptic number.

It is an amenable number.

20794572 is an abundant number, since it is smaller than the sum of its proper divisors (31769576).

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

20794572 is a wasteful number, since it uses less digits than its factorization.

20794572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577637 (or 577632 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 20794572 is about 4560.1065777019. The cubic root of 20794572 is about 274.9898486611.

The spelling of 20794572 in words is "twenty million, seven hundred ninety-four thousand, five hundred seventy-two".