16087880 has 16 divisors (see below), whose sum is σ = 36197820. Its totient is φ = 6435136.

The previous prime is 16087871. The next prime is 16087913. The reversal of 16087880 is 8878061.

It can be written as a sum of positive squares in 2 ways, for example, as 15476356 + 611524 = 3934^2 + 782^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201059 + ... + 201138.

Almost surely, 2^16087880 is an apocalyptic number.

16087880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16087880 is an abundant number, since it is smaller than the sum of its proper divisors (20109940).

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

16087880 is a wasteful number, since it uses less digits than its factorization.

16087880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402208 (or 402204 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 16087880 is about 4010.9699575040. The cubic root of 16087880 is about 252.4447089994. Note that the first 3 decimals are identical.

The spelling of 16087880 in words is "sixteen million, eighty-seven thousand, eight hundred eighty".