22218248 has 16 divisors (see below), whose sum is σ = 44863980. Its totient is φ = 10254528.

The previous prime is 22218223. The next prime is 22218257. The reversal of 22218248 is 84281222.

It can be written as a sum of positive squares in 2 ways, for example, as 21696964 + 521284 = 4658^2 + 722^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22218248.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106715 + ... + 106922.

Almost surely, 2^22218248 is an apocalyptic number.

It is an amenable number.

22218248 is an abundant number, since it is smaller than the sum of its proper divisors (22645732).

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

22218248 is a wasteful number, since it uses less digits than its factorization.

22218248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213656 (or 213652 counting only the distinct ones).

The product of its digits is 4096, while the sum is 29.

The square root of 22218248 is about 4713.6236591395. The cubic root of 22218248 is about 281.1274608238.

The spelling of 22218248 in words is "twenty-two million, two hundred eighteen thousand, two hundred forty-eight".