22228591400 has 48 divisors (see below), whose sum is σ = 54721570140. Its totient is φ = 8368409600.

The previous prime is 22228591393. The next prime is 22228591403. The reversal of 22228591400 is 419582222.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 14122470244 + 8106121156 = 118838^2 + 90034^2 .

It is a super-2 number, since 2×22228591400² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22228591403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3265511 + ... + 3272310.

Almost surely, 2^22228591400 is an apocalyptic number.

22228591400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22228591400 is an abundant number, since it is smaller than the sum of its proper divisors (32492978740).

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

22228591400 is a wasteful number, since it uses less digits than its factorization.

22228591400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6537854 (or 6537845 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 22228591400 in words is "twenty-two billion, two hundred twenty-eight million, five hundred ninety-one thousand, four hundred".