12562228 has 36 divisors (see below), whose sum is σ = 25855200. Its totient is φ = 5324592.

The previous prime is 12562183. The next prime is 12562237. The reversal of 12562228 is 82226521.

It is a super-4 number, since 4×12562228⁴ (a number of 29 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 12562196 and 12562205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20673 + ... + 21271.

It is an arithmetic number, because the mean of its divisors is an integer number (718200).

Almost surely, 2^12562228 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 12562228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12927600).

12562228 is an abundant number, since it is smaller than the sum of its proper divisors (13292972).

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

12562228 is a wasteful number, since it uses less digits than its factorization.

12562228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 715 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 12562228 is about 3544.3233486803. The cubic root of 12562228 is about 232.4639200960.

Adding to 12562228 its reverse (82226521), we get a palindrome (94788749).

The spelling of 12562228 in words is "twelve million, five hundred sixty-two thousand, two hundred twenty-eight".