22271418 has 24 divisors (see below), whose sum is σ = 51967188. Its totient is φ = 6852672.

The previous prime is 22271407. The next prime is 22271489. The reversal of 22271418 is 81417222.

It can be written as a sum of positive squares in 2 ways, for example, as 22212369 + 59049 = 4713^2 + 243^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22271391 and 22271400.

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, 47355 + ... + 47822.

Almost surely, 2^22271418 is an apocalyptic number.

22271418 is an abundant number, since it is smaller than the sum of its proper divisors (29695770).

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

22271418 is a wasteful number, since it uses less digits than its factorization.

22271418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95198 (or 95195 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 22271418 is about 4719.2603233981. The cubic root of 22271418 is about 281.3515354879.

The spelling of 22271418 in words is "twenty-two million, two hundred seventy-one thousand, four hundred eighteen".