16889723 has 8 divisors (see below), whose sum is σ = 17418288. Its totient is φ = 16365024.

The previous prime is 16889713. The next prime is 16889729. The reversal of 16889723 is 32798861.

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

It is a cyclic number.

It is not a de Polignac number, because 16889723 - 2²⁴ = 112507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16889729) 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, 9665 + ... + 11277.

It is an arithmetic number, because the mean of its divisors is an integer number (2177286).

Almost surely, 2^16889723 is an apocalyptic number.

16889723 is a deficient number, since it is larger than the sum of its proper divisors (528565).

16889723 is a wasteful number, since it uses less digits than its factorization.

16889723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933.

The product of its digits is 145152, while the sum is 44.

The square root of 16889723 is about 4109.7108170770. The cubic root of 16889723 is about 256.5709658018.

It can be divided in two parts, 1688 and 9723, that added together give a palindrome (11411).

The spelling of 16889723 in words is "sixteen million, eight hundred eighty-nine thousand, seven hundred twenty-three".