20324444140 has 96 divisors (see below), whose sum is σ = 57306461184. Its totient is φ = 5847586560.

The previous prime is 20324444069. The next prime is 20324444141. The reversal of 20324444140 is 4144442302.

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

It is a junction number, because it is equal to n+sod(n) for n = 20324444099 and 20324444108.

It is not an unprimeable number, because it can be changed into a prime (20324444141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 487584 + ... + 527623.

It is an arithmetic number, because the mean of its divisors is an integer number (596942304).

Almost surely, 2^20324444140 is an apocalyptic number.

20324444140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20324444140 is an abundant number, since it is smaller than the sum of its proper divisors (36982017044).

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

20324444140 is a wasteful number, since it uses less digits than its factorization.

20324444140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015247 (or 1015245 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 20324444140 its reverse (4144442302), we get a palindrome (24468886442).

It can be divided in two parts, 20324 and 444140, that added together give a palindrome (464464).

The spelling of 20324444140 in words is "twenty billion, three hundred twenty-four million, four hundred forty-four thousand, one hundred forty".