15087985 has 16 divisors (see below), whose sum is σ = 19829952. Its totient is φ = 10929600.

The previous prime is 15087967. The next prime is 15088019. The reversal of 15087985 is 58978051.

It is not a de Polignac number, because 15087985 - 2⁵ = 15087953 is a prime.

It is a Duffinian 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, 21490 + ... + 22180.

It is an arithmetic number, because the mean of its divisors is an integer number (1239372).

Almost surely, 2^15087985 is an apocalyptic number.

It is an amenable number.

15087985 is a deficient number, since it is larger than the sum of its proper divisors (4741967).

15087985 is a wasteful number, since it uses less digits than its factorization.

15087985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 15087985 is about 3884.3255527826. The cubic root of 15087985 is about 247.1024669519.

The spelling of 15087985 in words is "fifteen million, eighty-seven thousand, nine hundred eighty-five".