20620104432 has 80 divisors (see below), whose sum is σ = 54144272640. Its totient is φ = 6760889856.

The previous prime is 20620104431. The next prime is 20620104443. The reversal of 20620104432 is 23440102602.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620104431) 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 15 ways as a sum of consecutive naturals, for example, 1320253 + ... + 1335779.

It is an arithmetic number, because the mean of its divisors is an integer number (676803408).

Almost surely, 2^20620104432 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 20620104432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27072136320).

20620104432 is an abundant number, since it is smaller than the sum of its proper divisors (33524168208).

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

20620104432 is a wasteful number, since it uses less digits than its factorization.

20620104432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15990 (or 15984 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The spelling of 20620104432 in words is "twenty billion, six hundred twenty million, one hundred four thousand, four hundred thirty-two".