22449240 has 96 divisors (see below), whose sum is σ = 79606800. Its totient is φ = 5441280.

The previous prime is 22449233. The next prime is 22449247. The reversal of 22449240 is 4294422.

It is an interprime number because it is at equal distance from previous prime (22449233) and next prime (22449247).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22449247) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1126 + ... + 6794.

Almost surely, 2^22449240 is an apocalyptic number.

22449240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22449240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39803400).

22449240 is an abundant number, since it is smaller than the sum of its proper divisors (57157560).

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

22449240 is a wasteful number, since it uses less digits than its factorization.

22449240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697 (or 5690 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 22449240 is about 4738.0628953191. The cubic root of 22449240 is about 282.0983510879.

The spelling of 22449240 in words is "twenty-two million, four hundred forty-nine thousand, two hundred forty".