22494 has 16 divisors (see below), whose sum is σ = 47232. Its totient is φ = 7128.

The previous prime is 22483. The next prime is 22501. The reversal of 22494 is 49422.

It is a plaindrome in base 11 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 22494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57 + ... + 219.

It is an arithmetic number, because the mean of its divisors is an integer number (2952).

2²²⁴⁹⁴ is an apocalyptic number.

22494 is an abundant number, since it is smaller than the sum of its proper divisors (24738).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23616).

22494 is a wasteful number, since it uses less digits than its factorization.

22494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191.

The product of its digits is 576, while the sum is 21.

The square root of 22494 is about 149.9799986665. The cubic root of 22494 is about 28.2285712139.

The spelling of 22494 in words is "twenty-two thousand, four hundred ninety-four".