22005532240 has 20 divisors (see below), whose sum is σ = 51162862644. Its totient is φ = 8802212864.

The previous prime is 22005532217. The next prime is 22005532243. The reversal of 22005532240 is 4223550022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10977171984 + 11028360256 = 104772^2 + 105016^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22005532243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137534497 + ... + 137534656.

Almost surely, 2^22005532240 is an apocalyptic number.

22005532240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22005532240 is an abundant number, since it is smaller than the sum of its proper divisors (29157330404).

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

22005532240 is a wasteful number, since it uses less digits than its factorization.

22005532240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275069166 (or 275069160 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 22005532240 in words is "twenty-two billion, five million, five hundred thirty-two thousand, two hundred forty".