12251628 has 48 divisors (see below), whose sum is σ = 33636960. Its totient is φ = 3843072.

The previous prime is 12251623. The next prime is 12251633. The reversal of 12251628 is 82615221.

It is a happy number.

12251628 is a `hidden beast` number, since 12 + 25 + 1 + 628 = 666.

It is an interprime number because it is at equal distance from previous prime (12251623) and next prime (12251633).

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

It is not an unprimeable number, because it can be changed into a prime (12251623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1501 + ... + 5172.

It is an arithmetic number, because the mean of its divisors is an integer number (700770).

Almost surely, 2^12251628 is an apocalyptic number.

12251628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12251628 is an abundant number, since it is smaller than the sum of its proper divisors (21385332).

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

12251628 is a wasteful number, since it uses less digits than its factorization.

12251628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703 (or 6695 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 12251628 is about 3500.2325637020. The cubic root of 12251628 is about 230.5320261101.

Adding to 12251628 its reverse (82615221), we get a palindrome (94866849).

The spelling of 12251628 in words is "twelve million, two hundred fifty-one thousand, six hundred twenty-eight".