22449258 has 64 divisors (see below), whose sum is σ = 54391680. Its totient is φ = 6822144.

The previous prime is 22449257. The next prime is 22449283. The reversal of 22449258 is 85294422.

It is not an unprimeable number, because it can be changed into a prime (22449257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79185 + ... + 79467.

It is an arithmetic number, because the mean of its divisors is an integer number (849870).

Almost surely, 2^22449258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22449258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27195840).

22449258 is an abundant number, since it is smaller than the sum of its proper divisors (31942422).

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

22449258 is a wasteful number, since it uses less digits than its factorization.

22449258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 414 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 22449258 is about 4738.0647948292. The cubic root of 22449258 is about 282.0984264842.

The spelling of 22449258 in words is "twenty-two million, four hundred forty-nine thousand, two hundred fifty-eight".