22988544 has 72 divisors (see below), whose sum is σ = 62914320. Its totient is φ = 7446528.

The previous prime is 22988533. The next prime is 22988549. The reversal of 22988544 is 44588922.

It is a junction number, because it is equal to n+sod(n) for n = 22988496 and 22988505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22988549) 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 7 ways as a sum of consecutive naturals, for example, 28012 + ... + 28820.

It is an arithmetic number, because the mean of its divisors is an integer number (873810).

Almost surely, 2^22988544 is an apocalyptic number.

22988544 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 22988544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31457160).

22988544 is an abundant number, since it is smaller than the sum of its proper divisors (39925776).

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

22988544 is an equidigital number, since it uses as much as digits as its factorization.

22988544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 851 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 22988544 is about 4794.6370039869. The cubic root of 22988544 is about 284.3394737087.

It can be divided in two parts, 22988 and 544, that added together give a palindrome (23532).

The spelling of 22988544 in words is "twenty-two million, nine hundred eighty-eight thousand, five hundred forty-four".