22502304640 has 64 divisors (see below), whose sum is σ = 54676545120. Its totient is φ = 8853350400.

The previous prime is 22502304593. The next prime is 22502304641. The reversal of 22502304640 is 4640320522.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×22502304640² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22502304599 and 22502304608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22502304641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249156 + ... + 327235.

Almost surely, 2^22502304640 is an apocalyptic number.

22502304640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22502304640 is an abundant number, since it is smaller than the sum of its proper divisors (32174240480).

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

22502304640 is an equidigital number, since it uses as much as digits as its factorization.

22502304640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576471 (or 576459 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The spelling of 22502304640 in words is "twenty-two billion, five hundred two million, three hundred four thousand, six hundred forty".