32405423 has 4 divisors (see below), whose sum is σ = 32418408. Its totient is φ = 32392440.

The previous prime is 32405389. The next prime is 32405453. The reversal of 32405423 is 32450423.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32405423 is a prime.

It is a super-2 number, since 2×32405423² = 2100222879617858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32405453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1436 + ... + 8177.

It is an arithmetic number, because the mean of its divisors is an integer number (8104602).

Almost surely, 2^32405423 is an apocalyptic number.

32405423 is a deficient number, since it is larger than the sum of its proper divisors (12985).

32405423 is an equidigital number, since it uses as much as digits as its factorization.

32405423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12984.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 32405423 is about 5692.5761303649. The cubic root of 32405423 is about 318.8153561743.

Adding to 32405423 its reverse (32450423), we get a palindrome (64855846).

The spelling of 32405423 in words is "thirty-two million, four hundred five thousand, four hundred twenty-three".