12403285 has 16 divisors (see below), whose sum is σ = 15842736. Its totient is φ = 9289728.

The previous prime is 12403283. The next prime is 12403297. The reversal of 12403285 is 58230421.

12403285 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 850084 + 11553201 = 922^2 + 3399^2 .

It is a cyclic number.

It is not a de Polignac number, because 12403285 - 2¹ = 12403283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403283) 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, 28429 + ... + 28861.

It is an arithmetic number, because the mean of its divisors is an integer number (990171).

Almost surely, 2^12403285 is an apocalyptic number.

It is an amenable number.

12403285 is a deficient number, since it is larger than the sum of its proper divisors (3439451).

12403285 is a wasteful number, since it uses less digits than its factorization.

12403285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 12403285 is about 3521.8297801001. The cubic root of 12403285 is about 231.4793429626.

The spelling of 12403285 in words is "twelve million, four hundred three thousand, two hundred eighty-five".