12028515 has 16 divisors (see below), whose sum is σ = 19766688. Its totient is φ = 6241536.

The previous prime is 12028493. The next prime is 12028531. The reversal of 12028515 is 51582021.

It is not a de Polignac number, because 12028515 - 2⁶ = 12028451 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10282 + ... + 11391.

It is an arithmetic number, because the mean of its divisors is an integer number (1235418).

Almost surely, 2^12028515 is an apocalyptic number.

12028515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12028515 is a deficient number, since it is larger than the sum of its proper divisors (7738173).

12028515 is a wasteful number, since it uses less digits than its factorization.

12028515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21718.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 12028515 is about 3468.2149587360. The cubic root of 12028515 is about 229.1240468768.

The spelling of 12028515 in words is "twelve million, twenty-eight thousand, five hundred fifteen".