20772239472 has 60 divisors (see below), whose sum is σ = 58143102264. Its totient is φ = 6922926720.

The previous prime is 20772239443. The next prime is 20772239483. The reversal of 20772239472 is 27493227702.

It is a super-2 number, since 2×20772239472² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1696123 + ... + 1708325.

Almost surely, 2^20772239472 is an apocalyptic number.

It is an amenable number.

20772239472 is an abundant number, since it is smaller than the sum of its proper divisors (37370862792).

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

20772239472 is a wasteful number, since it uses less digits than its factorization.

20772239472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24038 (or 24029 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The spelling of 20772239472 in words is "twenty billion, seven hundred seventy-two million, two hundred thirty-nine thousand, four hundred seventy-two".