28518343 has 12 divisors (see below), whose sum is σ = 33278880. Its totient is φ = 24367392.

The previous prime is 28518341. The next prime is 28518377. The reversal of 28518343 is 34381582.

It is a happy number.

It is not a de Polignac number, because 28518343 - 2¹ = 28518341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28518299 and 28518308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28518341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19330 + ... + 20752.

It is an arithmetic number, because the mean of its divisors is an integer number (2773240).

Almost surely, 2^28518343 is an apocalyptic number.

28518343 is a deficient number, since it is larger than the sum of its proper divisors (4760537).

28518343 is a wasteful number, since it uses less digits than its factorization.

28518343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846 (or 1839 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 28518343 is about 5340.2568290299. The cubic root of 28518343 is about 305.5212550270.

The spelling of 28518343 in words is "twenty-eight million, five hundred eighteen thousand, three hundred forty-three".