12028775 has 48 divisors (see below), whose sum is σ = 17998848. Its totient is φ = 7872000.

The previous prime is 12028769. The next prime is 12028781. The reversal of 12028775 is 57782021.

It is an interprime number because it is at equal distance from previous prime (12028769) and next prime (12028781).

It is not a de Polignac number, because 12028775 - 2⁴ = 12028759 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144884 + ... + 144966.

It is an arithmetic number, because the mean of its divisors is an integer number (374976).

Almost surely, 2^12028775 is an apocalyptic number.

12028775 is a deficient number, since it is larger than the sum of its proper divisors (5970073).

12028775 is a wasteful number, since it uses less digits than its factorization.

12028775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 12028775 is about 3468.2524417926. The cubic root of 12028775 is about 229.1256977268.

The spelling of 12028775 in words is "twelve million, twenty-eight thousand, seven hundred seventy-five".