20306374432 has 48 divisors (see below), whose sum is σ = 41400911160. Its totient is φ = 9792606208.

The previous prime is 20306374411. The next prime is 20306374433. The reversal of 20306374432 is 23447360302.

It can be written as a sum of positive squares in 4 ways, for example, as 19634735376 + 671639056 = 140124^2 + 25916^2 .

It is not an unprimeable number, because it can be changed into a prime (20306374433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 895458 + ... + 917854.

Almost surely, 2^20306374432 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 20306374432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20700455580).

20306374432 is an abundant number, since it is smaller than the sum of its proper divisors (21094536728).

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

20306374432 is a wasteful number, since it uses less digits than its factorization.

20306374432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23413 (or 23405 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 34.

The spelling of 20306374432 in words is "twenty billion, three hundred six million, three hundred seventy-four thousand, four hundred thirty-two".