20244431400 has 48 divisors (see below), whose sum is σ = 62757739200. Its totient is φ = 5398514880.

The previous prime is 20244431399. The next prime is 20244431507. The reversal of 20244431400 is 413444202.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 16869760 + ... + 16870959.

It is an arithmetic number, because the mean of its divisors is an integer number (1307452900).

Almost surely, 2^20244431400 is an apocalyptic number.

20244431400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20244431400 is an abundant number, since it is smaller than the sum of its proper divisors (42513307800).

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

20244431400 is a wasteful number, since it uses less digits than its factorization.

20244431400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33740738 (or 33740729 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20244431400 its reverse (413444202), we get a palindrome (20657875602).

The spelling of 20244431400 in words is "twenty billion, two hundred forty-four million, four hundred thirty-one thousand, four hundred".