16089018 has 32 divisors (see below), whose sum is σ = 35259840. Its totient is φ = 4853760.

The previous prime is 16088959. The next prime is 16089023. The reversal of 16089018 is 81098061.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 16089018.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20538 + ... + 21306.

It is an arithmetic number, because the mean of its divisors is an integer number (1101870).

Almost surely, 2^16089018 is an apocalyptic number.

16089018 is an abundant number, since it is smaller than the sum of its proper divisors (19170822).

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

16089018 is a wasteful number, since it uses less digits than its factorization.

16089018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 16089018 is about 4011.1118159433. Note that the first 3 decimals coincide. The cubic root of 16089018 is about 252.4506612090.

The spelling of 16089018 in words is "sixteen million, eighty-nine thousand, eighteen".