28875743 has 8 divisors (see below), whose sum is σ = 31273200. Its totient is φ = 26503488.

The previous prime is 28875733. The next prime is 28875751. The reversal of 28875743 is 34757882.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28875743 - 2¹⁰ = 28874719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28875694 and 28875703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28875703) 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 7 ways as a sum of consecutive naturals, for example, 3878 + ... + 8531.

It is an arithmetic number, because the mean of its divisors is an integer number (3909150).

Almost surely, 2^28875743 is an apocalyptic number.

28875743 is a deficient number, since it is larger than the sum of its proper divisors (2397457).

28875743 is a wasteful number, since it uses less digits than its factorization.

28875743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12601.

The product of its digits is 376320, while the sum is 44.

The square root of 28875743 is about 5373.6154495833. The cubic root of 28875743 is about 306.7922533567.

The spelling of 28875743 in words is "twenty-eight million, eight hundred seventy-five thousand, seven hundred forty-three".