28732343 has 4 divisors (see below), whose sum is σ = 28844400. Its totient is φ = 28620288.

The previous prime is 28732339. The next prime is 28732373. The reversal of 28732343 is 34323782.

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

It is a cyclic number.

It is not a de Polignac number, because 28732343 - 2² = 28732339 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 (28732373) 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, 55643 + ... + 56156.

It is an arithmetic number, because the mean of its divisors is an integer number (7211100).

Almost surely, 2^28732343 is an apocalyptic number.

28732343 is a deficient number, since it is larger than the sum of its proper divisors (112057).

28732343 is a wasteful number, since it uses less digits than its factorization.

28732343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112056.

The product of its digits is 24192, while the sum is 32.

The square root of 28732343 is about 5360.2558707584. The cubic root of 28732343 is about 306.2835560621.

The spelling of 28732343 in words is "twenty-eight million, seven hundred thirty-two thousand, three hundred forty-three".