20427000832 has 132 divisors (see below), whose sum is σ = 47662904784. Its totient is φ = 8724602880.

The previous prime is 20427000829. The next prime is 20427000851. The reversal of 20427000832 is 23800072402.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20427000832.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21123613 + ... + 21124579.

It is an arithmetic number, because the mean of its divisors is an integer number (361082612).

Almost surely, 2^20427000832 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 20427000832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23831452392).

20427000832 is an abundant number, since it is smaller than the sum of its proper divisors (27235903952).

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

20427000832 is an equidigital number, since it uses as much as digits as its factorization.

20427000832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 20427000832 in words is "twenty billion, four hundred twenty-seven million, eight hundred thirty-two", and thus it is an aban number.