20324440320 has 72 divisors (see below), whose sum is σ = 64911193536. Its totient is φ = 5419849728.

The previous prime is 20324440273. The next prime is 20324440351. The reversal of 20324440320 is 2304442302.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2642572 + ... + 2650251.

Almost surely, 2^20324440320 is an apocalyptic number.

20324440320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20324440320 is an abundant number, since it is smaller than the sum of its proper divisors (44586753216).

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

20324440320 is an equidigital number, since it uses as much as digits as its factorization.

20324440320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5292847 (or 5292833 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20324440320 its reverse (2304442302), we get a palindrome (22628882622).

The spelling of 20324440320 in words is "twenty billion, three hundred twenty-four million, four hundred forty thousand, three hundred twenty".