12228858 has 12 divisors (see below), whose sum is σ = 26495898. Its totient is φ = 4076280.

The previous prime is 12228857. The next prime is 12228859. The reversal of 12228858 is 85882221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12228857) and next prime (12228859).

It can be written as a sum of positive squares in only one way, i.e., 11068929 + 1159929 = 3327^2 + 1077^2 .

It is not an unprimeable number, because it can be changed into a prime (12228857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339673 + ... + 339708.

Almost surely, 2^12228858 is an apocalyptic number.

12228858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12228858 is an abundant number, since it is smaller than the sum of its proper divisors (14267040).

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

12228858 is a wasteful number, since it uses less digits than its factorization.

12228858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679389 (or 679386 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 12228858 is about 3496.9784099991. The cubic root of 12228858 is about 230.3891207609.

The spelling of 12228858 in words is "twelve million, two hundred twenty-eight thousand, eight hundred fifty-eight".