12585890 has 8 divisors (see below), whose sum is σ = 22654620. Its totient is φ = 5034352.

The previous prime is 12585889. The next prime is 12585931. The reversal of 12585890 is 9858521.

It can be written as a sum of positive squares in 2 ways, for example, as 11242609 + 1343281 = 3353^2 + 1159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629285 + ... + 629304.

Almost surely, 2^12585890 is an apocalyptic number.

12585890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12585890 is a deficient number, since it is larger than the sum of its proper divisors (10068730).

12585890 is a wasteful number, since it uses less digits than its factorization.

12585890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258596.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 12585890 is about 3547.6597920319. The cubic root of 12585890 is about 232.6097835872.

The spelling of 12585890 in words is "twelve million, five hundred eighty-five thousand, eight hundred ninety".