16087990 has 16 divisors (see below), whose sum is σ = 29665440. Its totient is φ = 6278080.

The previous prime is 16087969. The next prime is 16087997. The reversal of 16087990 is 9978061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16087997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19210 + ... + 20029.

It is an arithmetic number, because the mean of its divisors is an integer number (1854090).

Almost surely, 2^16087990 is an apocalyptic number.

16087990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16087990 is a deficient number, since it is larger than the sum of its proper divisors (13577450).

16087990 is a wasteful number, since it uses less digits than its factorization.

16087990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39287.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 16087990 is about 4010.9836698745. The cubic root of 16087990 is about 252.4452843570.

The spelling of 16087990 in words is "sixteen million, eighty-seven thousand, nine hundred ninety".