22640024220 has 96 divisors (see below), whose sum is σ = 69188829696. Its totient is φ = 5485804800.

The previous prime is 22640024201. The next prime is 22640024269. The reversal of 22640024220 is 2242004622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1564257 + ... + 1578663.

It is an arithmetic number, because the mean of its divisors is an integer number (720716976).

Almost surely, 2^22640024220 is an apocalyptic number.

22640024220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22640024220 is an abundant number, since it is smaller than the sum of its proper divisors (46548805476).

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

22640024220 is a wasteful number, since it uses less digits than its factorization.

22640024220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16811 (or 16809 counting only the distinct ones).

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

Adding to 22640024220 its reverse (2242004622), we get a palindrome (24882028842).

The spelling of 22640024220 in words is "twenty-two billion, six hundred forty million, twenty-four thousand, two hundred twenty".