12587690 has 32 divisors (see below), whose sum is σ = 24131520. Its totient is φ = 4713984.

The previous prime is 12587689. The next prime is 12587699. The reversal of 12587690 is 9678521.

It is a super-2 number, since 2×12587690² = 316899879072200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 (12587699) 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, 18089 + ... + 18771.

It is an arithmetic number, because the mean of its divisors is an integer number (754110).

Almost surely, 2^12587690 is an apocalyptic number.

12587690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12587690 is a deficient number, since it is larger than the sum of its proper divisors (11543830).

12587690 is a wasteful number, since it uses less digits than its factorization.

12587690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 12587690 is about 3547.9134713237. The cubic root of 12587690 is about 232.6208721329.

The spelling of 12587690 in words is "twelve million, five hundred eighty-seven thousand, six hundred ninety".