22148618 has 8 divisors (see below), whose sum is σ = 33435012. Its totient is φ = 11003616.

The previous prime is 22148597. The next prime is 22148627. The reversal of 22148618 is 81684122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21464689 + 683929 = 4633^2 + 827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22148618² = 981122558619848, which contains 22 as substring.

It is a Curzon number.

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, 34955 + ... + 35582.

Almost surely, 2^22148618 is an apocalyptic number.

22148618 is a deficient number, since it is larger than the sum of its proper divisors (11286394).

22148618 is a wasteful number, since it uses less digits than its factorization.

22148618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70696.

The product of its digits is 6144, while the sum is 32.

The square root of 22148618 is about 4706.2318259941. The cubic root of 22148618 is about 280.8334774062.

The spelling of 22148618 in words is "twenty-two million, one hundred forty-eight thousand, six hundred eighteen".