20204772 has 48 divisors (see below), whose sum is σ = 57052800. Its totient is φ = 5432832.

The previous prime is 20204761. The next prime is 20204813. The reversal of 20204772 is 27740202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5647 + ... + 8502.

It is an arithmetic number, because the mean of its divisors is an integer number (1188600).

Almost surely, 2^20204772 is an apocalyptic number.

It is an amenable number.

20204772 is an abundant number, since it is smaller than the sum of its proper divisors (36848028).

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

20204772 is a wasteful number, since it uses less digits than its factorization.

20204772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14180 (or 14178 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20204772 is about 4494.9718575315. The cubic root of 20204772 is about 272.3650124008.

Adding to 20204772 its reverse (27740202), we get a palindrome (47944974).

The spelling of 20204772 in words is "twenty million, two hundred four thousand, seven hundred seventy-two".