16428793 has 4 divisors (see below), whose sum is σ = 16598260. Its totient is φ = 16259328.

The previous prime is 16428779. The next prime is 16428829. The reversal of 16428793 is 39782461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8543929 + 7884864 = 2923^2 + 2808^2 .

It is a cyclic number.

It is not a de Polignac number, because 16428793 - 2¹³ = 16420601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16428743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84588 + ... + 84781.

It is an arithmetic number, because the mean of its divisors is an integer number (4149565).

Almost surely, 2^16428793 is an apocalyptic number.

It is an amenable number.

16428793 is a deficient number, since it is larger than the sum of its proper divisors (169467).

16428793 is an equidigital number, since it uses as much as digits as its factorization.

16428793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169466.

The product of its digits is 72576, while the sum is 40.

The square root of 16428793 is about 4053.2447495803. The cubic root of 16428793 is about 254.2154175172.

The spelling of 16428793 in words is "sixteen million, four hundred twenty-eight thousand, seven hundred ninety-three".