22404020240 has 80 divisors (see below), whose sum is σ = 62663905920. Its totient is φ = 7277091840.

The previous prime is 22404020203. The next prime is 22404020363. The reversal of 22404020240 is 4202040422.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1042181 + ... + 1063460.

It is an arithmetic number, because the mean of its divisors is an integer number (783298824).

Almost surely, 2^22404020240 is an apocalyptic number.

22404020240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22404020240 is an abundant number, since it is smaller than the sum of its proper divisors (40259885680).

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

22404020240 is a wasteful number, since it uses less digits than its factorization.

22404020240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105680 (or 2105674 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22404020240 its reverse (4202040422), we get a palindrome (26606060662).

The spelling of 22404020240 in words is "twenty-two billion, four hundred four million, twenty thousand, two hundred forty".