16081090 has 8 divisors (see below), whose sum is σ = 28945980. Its totient is φ = 6432432.

The previous prime is 16081027. The next prime is 16081111. The reversal of 16081090 is 9018061.

It can be written as a sum of positive squares in 2 ways, for example, as 13126129 + 2954961 = 3623^2 + 1719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804045 + ... + 804064.

Almost surely, 2^16081090 is an apocalyptic number.

16081090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16081090 is a deficient number, since it is larger than the sum of its proper divisors (12864890).

16081090 is a wasteful number, since it uses less digits than its factorization.

16081090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608116.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 16081090 is about 4010.1234394966. The cubic root of 16081090 is about 252.4091886619.

The spelling of 16081090 in words is "sixteen million, eighty-one thousand, ninety".