16389273 has 4 divisors (see below), whose sum is σ = 21852368. Its totient is φ = 10926180.

The previous prime is 16389227. The next prime is 16389277. The reversal of 16389273 is 37298361.

16389273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16389273 - 2⁶ = 16389209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16389277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2731543 + ... + 2731548.

It is an arithmetic number, because the mean of its divisors is an integer number (5463092).

Almost surely, 2^16389273 is an apocalyptic number.

It is an amenable number.

16389273 is a deficient number, since it is larger than the sum of its proper divisors (5463095).

16389273 is an equidigital number, since it uses as much as digits as its factorization.

16389273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463094.

The product of its digits is 54432, while the sum is 39.

The square root of 16389273 is about 4048.3667076983. The cubic root of 16389273 is about 254.0114126767.

The spelling of 16389273 in words is "sixteen million, three hundred eighty-nine thousand, two hundred seventy-three".