22440548 has 48 divisors (see below), whose sum is σ = 45722880. Its totient is φ = 9550464.

The previous prime is 22440547. The next prime is 22440553. The reversal of 22440548 is 84504422.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 22440548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34361 + ... + 35007.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^22440548 is an apocalyptic number.

It is an amenable number.

22440548 is an abundant number, since it is smaller than the sum of its proper divisors (23282332).

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

22440548 is a wasteful number, since it uses less digits than its factorization.

22440548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 22440548 is about 4737.1455540230. The cubic root of 22440548 is about 282.0619383423.

The spelling of 22440548 in words is "twenty-two million, four hundred forty thousand, five hundred forty-eight".