16289423 has 4 divisors (see below), whose sum is σ = 16686768. Its totient is φ = 15892080.

The previous prime is 16289407. The next prime is 16289443. The reversal of 16289423 is 32498261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16289423 - 2⁴ = 16289407 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16289443) 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, 198611 + ... + 198692.

It is an arithmetic number, because the mean of its divisors is an integer number (4171692).

Almost surely, 2^16289423 is an apocalyptic number.

16289423 is a deficient number, since it is larger than the sum of its proper divisors (397345).

16289423 is an equidigital number, since it uses as much as digits as its factorization.

16289423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397344.

The product of its digits is 20736, while the sum is 35.

The square root of 16289423 is about 4036.0157333687. The cubic root of 16289423 is about 253.4945151942.

The spelling of 16289423 in words is "sixteen million, two hundred eighty-nine thousand, four hundred twenty-three".