22256176440 has 128 divisors (see below), whose sum is σ = 69225710400. Its totient is φ = 5717483520.

The previous prime is 22256176373. The next prime is 22256176477. The reversal of 22256176440 is 4467165222.

It is a super-2 number, since 2×22256176440² (a number of 21 digits) contains 22 as substring.

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, 1597344 + ... + 1611216.

Almost surely, 2^22256176440 is an apocalyptic number.

22256176440 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 22256176440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34612855200).

22256176440 is an abundant number, since it is smaller than the sum of its proper divisors (46969533960).

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

22256176440 is a wasteful number, since it uses less digits than its factorization.

22256176440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14377 (or 14373 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 22256176440 in words is "twenty-two billion, two hundred fifty-six million, one hundred seventy-six thousand, four hundred forty".