22244620640 has 72 divisors (see below), whose sum is σ = 57764826000. Its totient is φ = 8088945920.

The previous prime is 22244620639. The next prime is 22244620667. The reversal of 22244620640 is 4602644222.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 22244620597 and 22244620606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555140 + ... + 593859.

It is an arithmetic number, because the mean of its divisors is an integer number (802289250).

Almost surely, 2^22244620640 is an apocalyptic number.

22244620640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22244620640 is an abundant number, since it is smaller than the sum of its proper divisors (35520205360).

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

22244620640 is a wasteful number, since it uses less digits than its factorization.

22244620640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149036 (or 1149017 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The spelling of 22244620640 in words is "twenty-two billion, two hundred forty-four million, six hundred twenty thousand, six hundred forty".