12257028 has 96 divisors (see below), whose sum is σ = 37560320. Its totient is φ = 3382560.

The previous prime is 12257009. The next prime is 12257039. The reversal of 12257028 is 82075221.

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

It is a junction number, because it is equal to n+sod(n) for n = 12256992 and 12257010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23175 + ... + 23697.

Almost surely, 2^12257028 is an apocalyptic number.

12257028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12257028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18780160).

12257028 is an abundant number, since it is smaller than the sum of its proper divisors (25303292).

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

12257028 is a wasteful number, since it uses less digits than its factorization.

12257028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12257028 is about 3501.0038560390. The cubic root of 12257028 is about 230.5658907277.

Subtracting from 12257028 its sum of digits (27), we obtain a square (12257001 = 3501²).

The spelling of 12257028 in words is "twelve million, two hundred fifty-seven thousand, twenty-eight".