28432343 has 4 divisors (see below), whose sum is σ = 28443288. Its totient is φ = 28421400.

The previous prime is 28432333. The next prime is 28432357. The reversal of 28432343 is 34323482.

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 not a de Polignac number, because 28432343 - 2⁸ = 28432087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28432333) 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, 893 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (7110822).

Almost surely, 2^28432343 is an apocalyptic number.

28432343 is a deficient number, since it is larger than the sum of its proper divisors (10945).

28432343 is an equidigital number, since it uses as much as digits as its factorization.

28432343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10944.

The product of its digits is 13824, while the sum is 29.

The square root of 28432343 is about 5332.1987022241. The cubic root of 28432343 is about 305.2138355326.

The spelling of 28432343 in words is "twenty-eight million, four hundred thirty-two thousand, three hundred forty-three".