22304432240 has 20 divisors (see below), whose sum is σ = 51857805144. Its totient is φ = 8921772864.

The previous prime is 22304432231. The next prime is 22304432251. The reversal of 22304432240 is 4223440322.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139402622 + ... + 139402781.

Almost surely, 2^22304432240 is an apocalyptic number.

22304432240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22304432240 is an abundant number, since it is smaller than the sum of its proper divisors (29553372904).

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

22304432240 is a wasteful number, since it uses less digits than its factorization.

22304432240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278805416 (or 278805410 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 22304432240 its reverse (4223440322), we get a palindrome (26527872562).

The spelling of 22304432240 in words is "twenty-two billion, three hundred four million, four hundred thirty-two thousand, two hundred forty".