22557248 has 42 divisors (see below), whose sum is σ = 52077366. Its totient is φ = 9666048.

The previous prime is 22557233. The next prime is 22557263. The reversal of 22557248 is 84275522.

It is an interprime number because it is at equal distance from previous prime (22557233) and next prime (22557263).

It can be written as a sum of positive squares in only one way, i.e., 14077504 + 8479744 = 3752^2 + 2912^2 .

It is a super-3 number, since 3×22557248³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 461 + ... + 6732.

Almost surely, 2^22557248 is an apocalyptic number.

22557248 is a gapful number since it is divisible by the number (28) 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 22557248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26038683).

22557248 is an abundant number, since it is smaller than the sum of its proper divisors (29520118).

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

22557248 is an equidigital number, since it uses as much as digits as its factorization.

22557248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7219 (or 7202 counting only the distinct ones).

The product of its digits is 44800, while the sum is 35.

The square root of 22557248 is about 4749.4471257190. The cubic root of 22557248 is about 282.5500389081.

The spelling of 22557248 in words is "twenty-two million, five hundred fifty-seven thousand, two hundred forty-eight".