28712343 has 16 divisors (see below), whose sum is σ = 41855616. Its totient is φ = 17363040.

The previous prime is 28712339. The next prime is 28712351. The reversal of 28712343 is 34321782.

It is not a de Polignac number, because 28712343 - 2² = 28712339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28712343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28712353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23596 + ... + 24782.

It is an arithmetic number, because the mean of its divisors is an integer number (2615976).

Almost surely, 2^28712343 is an apocalyptic number.

28712343 is a deficient number, since it is larger than the sum of its proper divisors (13143273).

28712343 is a wasteful number, since it uses less digits than its factorization.

28712343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934.

The product of its digits is 8064, while the sum is 30.

The square root of 28712343 is about 5358.3899634125. The cubic root of 28712343 is about 306.2124736471.

The spelling of 28712343 in words is "twenty-eight million, seven hundred twelve thousand, three hundred forty-three".