12028257 has 12 divisors (see below), whose sum is σ = 18018000. Its totient is φ = 8018676.

The previous prime is 12028253. The next prime is 12028267. The reversal of 12028257 is 75282021.

12028257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12028257 - 2² = 12028253 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12028257.

It is not an unprimeable number, because it can be changed into a prime (12028253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24507 + ... + 24992.

It is an arithmetic number, because the mean of its divisors is an integer number (1501500).

Almost surely, 2^12028257 is an apocalyptic number.

It is an amenable number.

12028257 is a deficient number, since it is larger than the sum of its proper divisors (5989743).

12028257 is an frugal number, since it uses more digits than its factorization.

12028257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49514 (or 49502 counting only the distinct ones).

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

The square root of 12028257 is about 3468.1777636102. The cubic root of 12028257 is about 229.1224087021.

The spelling of 12028257 in words is "twelve million, twenty-eight thousand, two hundred fifty-seven".