28791343 has 8 divisors (see below), whose sum is σ = 33966080. Its totient is φ = 23882040.

The previous prime is 28791337. The next prime is 28791359. The reversal of 28791343 is 34319782.

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

It is a de Polignac number, because none of the positive numbers 2^k-28791343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28791643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66123 + ... + 66556.

It is an arithmetic number, because the mean of its divisors is an integer number (4245760).

Almost surely, 2^28791343 is an apocalyptic number.

28791343 is a deficient number, since it is larger than the sum of its proper divisors (5174737).

28791343 is a wasteful number, since it uses less digits than its factorization.

28791343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132717.

The product of its digits is 36288, while the sum is 37.

The square root of 28791343 is about 5365.7565170253. The cubic root of 28791343 is about 306.4930571909.

The spelling of 28791343 in words is "twenty-eight million, seven hundred ninety-one thousand, three hundred forty-three".