20040522320 has 160 divisors (see below), whose sum is σ = 57483820800. Its totient is φ = 6327336960.

The previous prime is 20040522317. The next prime is 20040522347. The reversal of 20040522320 is 2322504002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20040522292 and 20040522301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3265655 + ... + 3271785.

It is an arithmetic number, because the mean of its divisors is an integer number (359273880).

Almost surely, 2^20040522320 is an apocalyptic number.

20040522320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20040522320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28741910400).

20040522320 is an abundant number, since it is smaller than the sum of its proper divisors (37443298480).

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

20040522320 is a wasteful number, since it uses less digits than its factorization.

20040522320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6613 (or 6607 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The spelling of 20040522320 in words is "twenty billion, forty million, five hundred twenty-two thousand, three hundred twenty".