16089321 has 8 divisors (see below), whose sum is σ = 21661120. Its totient is φ = 10621872.

The previous prime is 16089319. The next prime is 16089329. The reversal of 16089321 is 12398061.

16089321 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16089321 - 2¹ = 16089319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16089329) 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, 25726 + ... + 26343.

It is an arithmetic number, because the mean of its divisors is an integer number (2707640).

Almost surely, 2^16089321 is an apocalyptic number.

It is an amenable number.

16089321 is a deficient number, since it is larger than the sum of its proper divisors (5571799).

16089321 is a wasteful number, since it uses less digits than its factorization.

16089321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52175.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 16089321 is about 4011.1495858419. The cubic root of 16089321 is about 252.4522459768.

The spelling of 16089321 in words is "sixteen million, eighty-nine thousand, three hundred twenty-one".