20320412832 has 72 divisors (see below), whose sum is σ = 57812227200. Its totient is φ = 6770417280.

The previous prime is 20320412831. The next prime is 20320413017. The reversal of 20320412832 is 23821402302.

20320412832 is a `hidden beast` number, since 20 + 320 + 41 + 283 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 20320412796 and 20320412805.

It is not an unprimeable number, because it can be changed into a prime (20320412831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 676207 + ... + 705617.

It is an arithmetic number, because the mean of its divisors is an integer number (802947600).

Almost surely, 2^20320412832 is an apocalyptic number.

It is an amenable number.

20320412832 is an abundant number, since it is smaller than the sum of its proper divisors (37491814368).

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

20320412832 is a wasteful number, since it uses less digits than its factorization.

20320412832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31826 (or 31815 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The spelling of 20320412832 in words is "twenty billion, three hundred twenty million, four hundred twelve thousand, eight hundred thirty-two".