22818492 has 54 divisors (see below), whose sum is σ = 59409168. Its totient is φ = 7384608.

The previous prime is 22818479. The next prime is 22818493. The reversal of 22818492 is 29481822.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22818493) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49053 + ... + 49515.

Almost surely, 2^22818492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22818492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29704584).

22818492 is an abundant number, since it is smaller than the sum of its proper divisors (36590676).

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

22818492 is a wasteful number, since it uses less digits than its factorization.

22818492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 505 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 22818492 is about 4776.8705236797. The cubic root of 22818492 is about 283.6366277790.

The spelling of 22818492 in words is "twenty-two million, eight hundred eighteen thousand, four hundred ninety-two".