16423433 has 4 divisors (see below), whose sum is σ = 17686788. Its totient is φ = 15160080.

The previous prime is 16423399. The next prime is 16423439. The reversal of 16423433 is 33432461.

It is a happy number.

16423433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33432461 = 103 ⋅324587.

It can be written as a sum of positive squares in 2 ways, for example, as 4507129 + 11916304 = 2123^2 + 3452^2 .

It is not a de Polignac number, because 16423433 - 2⁸ = 16423177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16423439) 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, 631658 + ... + 631683.

It is an arithmetic number, because the mean of its divisors is an integer number (4421697).

Almost surely, 2^16423433 is an apocalyptic number.

16423433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16423433 is a deficient number, since it is larger than the sum of its proper divisors (1263355).

16423433 is a wasteful number, since it uses less digits than its factorization.

16423433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263354.

The product of its digits is 5184, while the sum is 26.

The square root of 16423433 is about 4052.5834969807. The cubic root of 16423433 is about 254.1877680352.

Adding to 16423433 its reverse (33432461), we get a palindrome (49855894).

Subtracting 16423433 from its reverse (33432461), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 16423433 in words is "sixteen million, four hundred twenty-three thousand, four hundred thirty-three".