12985258 has 16 divisors (see below), whose sum is σ = 22883616. Its totient is φ = 5448240.

The previous prime is 12985223. The next prime is 12985277. The reversal of 12985258 is 85258921.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12985258.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22416 + ... + 22987.

It is an arithmetic number, because the mean of its divisors is an integer number (1430226).

Almost surely, 2^12985258 is an apocalyptic number.

12985258 is a deficient number, since it is larger than the sum of its proper divisors (9898358).

12985258 is a wasteful number, since it uses less digits than its factorization.

12985258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45429.

The product of its digits is 57600, while the sum is 40.

The square root of 12985258 is about 3603.5063479894. The cubic root of 12985258 is about 235.0445547029.

It can be divided in two parts, 1298 and 5258, that added together give a palindrome (6556).

The spelling of 12985258 in words is "twelve million, nine hundred eighty-five thousand, two hundred fifty-eight".