12251328 has 28 divisors (see below), whose sum is σ = 32415480. Its totient is φ = 4083712.

The previous prime is 12251299. The next prime is 12251357. The reversal of 12251328 is 82315221.

It is an interprime number because it is at equal distance from previous prime (12251299) and next prime (12251357).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 12251298 and 12251307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31713 + ... + 32096.

Almost surely, 2^12251328 is an apocalyptic number.

It is an amenable number.

12251328 is an abundant number, since it is smaller than the sum of its proper divisors (20164152).

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

12251328 is an equidigital number, since it uses as much as digits as its factorization.

12251328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63824 (or 63814 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 12251328 is about 3500.1897091443. The cubic root of 12251328 is about 230.5301444508.

Adding to 12251328 its reverse (82315221), we get a palindrome (94566549).

The spelling of 12251328 in words is "twelve million, two hundred fifty-one thousand, three hundred twenty-eight".