20304772 has 12 divisors (see below), whose sum is σ = 36360016. Its totient is φ = 9916200.

The previous prime is 20304769. The next prime is 20304773. The reversal of 20304772 is 27740302.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20304773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58854 + ... + 59197.

Almost surely, 2^20304772 is an apocalyptic number.

It is an amenable number.

20304772 is a deficient number, since it is larger than the sum of its proper divisors (16055244).

20304772 is a wasteful number, since it uses less digits than its factorization.

20304772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118098 (or 118096 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 20304772 is about 4506.0816681458. The cubic root of 20304772 is about 272.8136141846.

The spelling of 20304772 in words is "twenty million, three hundred four thousand, seven hundred seventy-two".