16423474 has 4 divisors (see below), whose sum is σ = 24635214. Its totient is φ = 8211736.

The previous prime is 16423469. The next prime is 16423487. The reversal of 16423474 is 47432461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47432461 = 89 ⋅532949.

It can be written as a sum of positive squares in only one way, i.e., 15657849 + 765625 = 3957^2 + 875^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4105867 + ... + 4105870.

Almost surely, 2^16423474 is an apocalyptic number.

16423474 is a deficient number, since it is larger than the sum of its proper divisors (8211740).

16423474 is an equidigital number, since it uses as much as digits as its factorization.

16423474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8211739.

The product of its digits is 16128, while the sum is 31.

The square root of 16423474 is about 4052.5885554791. The cubic root of 16423474 is about 254.1879795559.

The spelling of 16423474 in words is "sixteen million, four hundred twenty-three thousand, four hundred seventy-four".