22452144 has 80 divisors (see below), whose sum is σ = 68162304. Its totient is φ = 6278400.

The previous prime is 22452137. The next prime is 22452151. The reversal of 22452144 is 44125422.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22452137) and next prime (22452151).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5229 + ... + 8499.

Almost surely, 2^22452144 is an apocalyptic number.

22452144 is a gapful number since it is divisible by the number (24) 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 22452144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34081152).

22452144 is an abundant number, since it is smaller than the sum of its proper divisors (45710160).

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

22452144 is a wasteful number, since it uses less digits than its factorization.

22452144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306 (or 3300 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 22452144 is about 4738.3693397624. The cubic root of 22452144 is about 282.1105145032.

Adding to 22452144 its reverse (44125422), we get a palindrome (66577566).

The spelling of 22452144 in words is "twenty-two million, four hundred fifty-two thousand, one hundred forty-four".