12228570 has 80 divisors (see below), whose sum is σ = 34011648. Its totient is φ = 3149280.

The previous prime is 12228563. The next prime is 12228577. The reversal of 12228570 is 7582221.

It is an interprime number because it is at equal distance from previous prime (12228563) and next prime (12228577).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12228577) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24867 + ... + 25353.

Almost surely, 2^12228570 is an apocalyptic number.

12228570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12228570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17005824).

12228570 is an abundant number, since it is smaller than the sum of its proper divisors (21783078).

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

12228570 is a wasteful number, since it uses less digits than its factorization.

12228570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12228570 is about 3496.9372313497. The cubic root of 12228570 is about 230.3873121268.

The spelling of 12228570 in words is "twelve million, two hundred twenty-eight thousand, five hundred seventy".