22502989 has 4 divisors (see below), whose sum is σ = 22981824. Its totient is φ = 22024156.

The previous prime is 22502983. The next prime is 22502999. The reversal of 22502989 is 98920522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22502989 - 2³ = 22502981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22502981) 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, 239347 + ... + 239440.

It is an arithmetic number, because the mean of its divisors is an integer number (5745456).

Almost surely, 2^22502989 is an apocalyptic number.

It is an amenable number.

22502989 is a deficient number, since it is larger than the sum of its proper divisors (478835).

22502989 is an equidigital number, since it uses as much as digits as its factorization.

22502989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478834.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 22502989 is about 4743.7315480537. The cubic root of 22502989 is about 282.3233092516.

The spelling of 22502989 in words is "twenty-two million, five hundred two thousand, nine hundred eighty-nine".