12587290 has 16 divisors (see below), whose sum is σ = 22996512. Its totient is φ = 4959504.

The previous prime is 12587273. The next prime is 12587297. The reversal of 12587290 is 9278521.

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

It is not an unprimeable number, because it can be changed into a prime (12587297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8724 + ... + 10063.

It is an arithmetic number, because the mean of its divisors is an integer number (1437282).

Almost surely, 2^12587290 is an apocalyptic number.

12587290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12587290 is a deficient number, since it is larger than the sum of its proper divisors (10409222).

12587290 is a wasteful number, since it uses less digits than its factorization.

12587290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18861.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 12587290 is about 3547.8570997153. The cubic root of 12587290 is about 232.6184081030.

The spelling of 12587290 in words is "twelve million, five hundred eighty-seven thousand, two hundred ninety".