22270918 has 24 divisors (see below), whose sum is σ = 36206352. Its totient is φ = 10268544.

The previous prime is 22270891. The next prime is 22270931. The reversal of 22270918 is 81907222.

It is a self number, because there is not a number n which added to its sum of digits gives 22270918.

It is a congruent number.

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, 30271 + ... + 30997.

It is an arithmetic number, because the mean of its divisors is an integer number (1508598).

Almost surely, 2^22270918 is an apocalyptic number.

22270918 is a deficient number, since it is larger than the sum of its proper divisors (13935434).

22270918 is a wasteful number, since it uses less digits than its factorization.

22270918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 22270918 is about 4719.2073486974. The cubic root of 22270918 is about 281.3494299967.

The spelling of 22270918 in words is "twenty-two million, two hundred seventy thousand, nine hundred eighteen".