22645984 has 48 divisors (see below), whose sum is σ = 48172320. Its totient is φ = 10447360.

The previous prime is 22645979. The next prime is 22646021. The reversal of 22645984 is 48954622.

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, 20814 + ... + 21874.

It is an arithmetic number, because the mean of its divisors is an integer number (1003590).

Almost surely, 2^22645984 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 22645984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24086160).

22645984 is an abundant number, since it is smaller than the sum of its proper divisors (25526336).

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

22645984 is a wasteful number, since it uses less digits than its factorization.

22645984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123 (or 1115 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 22645984 is about 4758.7796755051. The cubic root of 22645984 is about 282.9200538327.

The spelling of 22645984 in words is "twenty-two million, six hundred forty-five thousand, nine hundred eighty-four".