22040888440 has 64 divisors (see below), whose sum is σ = 53057988000. Its totient is φ = 8215395840.

The previous prime is 22040888437. The next prime is 22040888447. The reversal of 22040888440 is 4488804022.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 22040888393 and 22040888402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040888447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191355 + ... + 284074.

Almost surely, 2^22040888440 is an apocalyptic number.

22040888440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22040888440 is an abundant number, since it is smaller than the sum of its proper divisors (31017099560).

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

22040888440 is a wasteful number, since it uses less digits than its factorization.

22040888440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475520 (or 475516 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The spelling of 22040888440 in words is "twenty-two billion, forty million, eight hundred eighty-eight thousand, four hundred forty".