22053618 has 24 divisors (see below), whose sum is σ = 48686508. Its totient is φ = 7212192.

The previous prime is 22053611. The next prime is 22053637. The reversal of 22053618 is 81635022.

It can be written as a sum of positive squares in 2 ways, for example, as 20548089 + 1505529 = 4533^2 + 1227^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22053591 and 22053600.

It is not an unprimeable number, because it can be changed into a prime (22053611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10605 + ... + 12512.

Almost surely, 2^22053618 is an apocalyptic number.

22053618 is an abundant number, since it is smaller than the sum of its proper divisors (26632890).

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

22053618 is a wasteful number, since it uses less digits than its factorization.

22053618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23178 (or 23175 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 22053618 is about 4696.1279795167. The cubic root of 22053618 is about 280.4313843625.

The spelling of 22053618 in words is "twenty-two million, fifty-three thousand, six hundred eighteen".