20486812272 has 80 divisors (see below), whose sum is σ = 55380169728. Its totient is φ = 6518085120.

The previous prime is 20486812261. The next prime is 20486812343. The reversal of 20486812272 is 27221868402.

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 15 ways as a sum of consecutive naturals, for example, 14323 + ... + 202925.

Almost surely, 2^20486812272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20486812272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27690084864).

20486812272 is an abundant number, since it is smaller than the sum of its proper divisors (34893357456).

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

20486812272 is a wasteful number, since it uses less digits than its factorization.

20486812272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188718 (or 188712 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 20486812272 in words is "twenty billion, four hundred eighty-six million, eight hundred twelve thousand, two hundred seventy-two".