20407273272 has 64 divisors (see below), whose sum is σ = 57119673600. Its totient is φ = 6750488160.

The previous prime is 20407273261. The next prime is 20407273357. The reversal of 20407273272 is 27237270402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332308 + ... + 388899.

It is an arithmetic number, because the mean of its divisors is an integer number (892494900).

Almost surely, 2^20407273272 is an apocalyptic number.

It is an amenable number.

20407273272 is an abundant number, since it is smaller than the sum of its proper divisors (36712400328).

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

20407273272 is a wasteful number, since it uses less digits than its factorization.

20407273272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721353 (or 721343 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 36.

The spelling of 20407273272 in words is "twenty billion, four hundred seven million, two hundred seventy-three thousand, two hundred seventy-two".