16087998 has 16 divisors (see below), whose sum is σ = 32215680. Its totient is φ = 5356056.

The previous prime is 16087997. The next prime is 16088027. The reversal of 16087998 is 89978061.

It is a happy number.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7623 + ... + 9501.

It is an arithmetic number, because the mean of its divisors is an integer number (2013480).

Almost surely, 2^16087998 is an apocalyptic number.

16087998 is an abundant number, since it is smaller than the sum of its proper divisors (16127682).

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

16087998 is a wasteful number, since it uses less digits than its factorization.

16087998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 16087998 is about 4010.9846671360. The cubic root of 16087998 is about 252.4453262011.

The spelling of 16087998 in words is "sixteen million, eighty-seven thousand, nine hundred ninety-eight".