28715043 has 8 divisors (see below), whose sum is σ = 43756288. Its totient is φ = 16408584.

The previous prime is 28715039. The next prime is 28715051. The reversal of 28715043 is 34051782.

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

It is not a de Polignac number, because 28715043 - 2² = 28715039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28715043.

It is not an unprimeable number, because it can be changed into a prime (28715003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683671 + ... + 683712.

It is an arithmetic number, because the mean of its divisors is an integer number (5469536).

Almost surely, 2^28715043 is an apocalyptic number.

28715043 is a deficient number, since it is larger than the sum of its proper divisors (15041245).

28715043 is a wasteful number, since it uses less digits than its factorization.

28715043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367393.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28715043 is about 5358.6418988397. The cubic root of 28715043 is about 306.2220717000. Note that the first 3 decimals are identical.

The spelling of 28715043 in words is "twenty-eight million, seven hundred fifteen thousand, forty-three".