22540618 has 8 divisors (see below), whose sum is σ = 34018848. Its totient is φ = 11201004.

The previous prime is 22540607. The next prime is 22540619. The reversal of 22540618 is 81604522.

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

It is not an unprimeable number, because it can be changed into a prime (22540619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34246 + ... + 34897.

It is an arithmetic number, because the mean of its divisors is an integer number (4252356).

Almost surely, 2^22540618 is an apocalyptic number.

22540618 is a deficient number, since it is larger than the sum of its proper divisors (11478230).

22540618 is a wasteful number, since it uses less digits than its factorization.

22540618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69308.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22540618 is about 4747.6960728336. The cubic root of 22540618 is about 282.4805865480.

The spelling of 22540618 in words is "twenty-two million, five hundred forty thousand, six hundred eighteen".