13587990 has 32 divisors (see below), whose sum is σ = 35120736. Its totient is φ = 3344640.

The previous prime is 13587989. The next prime is 13588007. The reversal of 13587990 is 9978531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17031 + ... + 17810.

It is an arithmetic number, because the mean of its divisors is an integer number (1097523).

Almost surely, 2^13587990 is an apocalyptic number.

13587990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13587990 is an abundant number, since it is smaller than the sum of its proper divisors (21532746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13587990 is a wasteful number, since it uses less digits than its factorization.

13587990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34864.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 13587990 is about 3686.1890890186. The cubic root of 13587990 is about 238.6263542947.

The spelling of 13587990 in words is "thirteen million, five hundred eighty-seven thousand, nine hundred ninety".