22448988 has 60 divisors (see below), whose sum is σ = 59154480. Its totient is φ = 7423488.

The previous prime is 22448981. The next prime is 22449041. The reversal of 22448988 is 88984422.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22448981) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 62353 + ... + 62711.

It is an arithmetic number, because the mean of its divisors is an integer number (985908).

Almost surely, 2^22448988 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 22448988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29577240).

22448988 is an abundant number, since it is smaller than the sum of its proper divisors (36705492).

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

22448988 is a wasteful number, since it uses less digits than its factorization.

22448988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 557 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 22448988 is about 4738.0363020982. The cubic root of 22448988 is about 282.0972955355.

It can be divided in two parts, 22448 and 988, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 22448988 in words is "twenty-two million, four hundred forty-eight thousand, nine hundred eighty-eight".