20331772 has 12 divisors (see below), whose sum is σ = 35617120. Its totient is φ = 10155456.

The previous prime is 20331761. The next prime is 20331781. The reversal of 20331772 is 27713302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3229 + ... + 7147.

Almost surely, 2^20331772 is an apocalyptic number.

It is an amenable number.

20331772 is a deficient number, since it is larger than the sum of its proper divisors (15285348).

20331772 is a wasteful number, since it uses less digits than its factorization.

20331772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220 (or 5218 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 20331772 is about 4509.0766238777. The cubic root of 20331772 is about 272.9344840481.

The spelling of 20331772 in words is "twenty million, three hundred thirty-one thousand, seven hundred seventy-two".