16423193 has 8 divisors (see below), whose sum is σ = 17070600. Its totient is φ = 15781248.

The previous prime is 16423189. The next prime is 16423217. The reversal of 16423193 is 39132461.

It can be written as a sum of positive squares in 4 ways, for example, as 8340544 + 8082649 = 2888^2 + 2843^2 .

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 16423193 - 2² = 16423189 is a prime.

It is a super-3 number, since 3×16423193³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16423103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5405 + ... + 7877.

It is an arithmetic number, because the mean of its divisors is an integer number (2133825).

Almost surely, 2^16423193 is an apocalyptic number.

It is an amenable number.

16423193 is a deficient number, since it is larger than the sum of its proper divisors (647407).

16423193 is a wasteful number, since it uses less digits than its factorization.

16423193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731.

The product of its digits is 3888, while the sum is 29.

The square root of 16423193 is about 4052.5538861316. The cubic root of 16423193 is about 254.1865298580.

The spelling of 16423193 in words is "sixteen million, four hundred twenty-three thousand, one hundred ninety-three".