22570240 has 144 divisors (see below), whose sum is σ = 67697280. Its totient is φ = 7004160.

The previous prime is 22570211. The next prime is 22570253. The reversal of 22570240 is 4207522.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98446 + ... + 98674.

It is an arithmetic number, because the mean of its divisors is an integer number (470120).

Almost surely, 2^22570240 is an apocalyptic number.

22570240 is a gapful number since it is divisible by the number (20) 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 22570240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33848640).

22570240 is an abundant number, since it is smaller than the sum of its proper divisors (45127040).

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

22570240 is a wasteful number, since it uses less digits than its factorization.

22570240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 22570240 is about 4750.8146669808. The cubic root of 22570240 is about 282.6042740342.

Adding to 22570240 its reverse (4207522), we get a palindrome (26777762).

The spelling of 22570240 in words is "twenty-two million, five hundred seventy thousand, two hundred forty".