12257322 has 64 divisors (see below), whose sum is σ = 31325184. Its totient is φ = 3104640.

The previous prime is 12257317. The next prime is 12257327. The reversal of 12257322 is 22375221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12257317) and next prime (12257327).

It is a super-2 number, since 2×12257322² = 300483885223368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12257292 and 12257301.

It is not an unprimeable number, because it can be changed into a prime (12257327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19558 + ... + 20174.

It is an arithmetic number, because the mean of its divisors is an integer number (489456).

Almost surely, 2^12257322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12257322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15662592).

12257322 is an abundant number, since it is smaller than the sum of its proper divisors (19067862).

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

12257322 is a wasteful number, since it uses less digits than its factorization.

12257322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

The product of its digits is 1680, while the sum is 24.

The square root of 12257322 is about 3501.0458437444. The cubic root of 12257322 is about 230.5677341825.

The spelling of 12257322 in words is "twelve million, two hundred fifty-seven thousand, three hundred twenty-two".