22640292000 has 288 divisors, whose sum is σ = 82946433024. Its totient is φ = 5842368000.

The previous prime is 22640291959. The next prime is 22640292001. The reversal of 22640292000 is 29204622.

It is a tau number, because it is divible by the number of its divisors (288).

It is not an unprimeable number, because it can be changed into a prime (22640292001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1105857 + ... + 1126143.

It is an arithmetic number, because the mean of its divisors is an integer number (288008448).

Almost surely, 2^22640292000 is an apocalyptic number.

22640292000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22640292000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41473216512).

22640292000 is an abundant number, since it is smaller than the sum of its proper divisors (60306141024).

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

22640292000 is a wasteful number, since it uses less digits than its factorization.

22640292000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20349 (or 20328 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 22640292000 its reverse (29204622), we get a palindrome (22669496622).

The spelling of 22640292000 in words is "twenty-two billion, six hundred forty million, two hundred ninety-two thousand".