28936343 has 4 divisors (see below), whose sum is σ = 28947408. Its totient is φ = 28925280.

The previous prime is 28936337. The next prime is 28936379. The reversal of 28936343 is 34363982.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34363982 = 2 ⋅17181991.

It is a cyclic number.

It is not a de Polignac number, because 28936343 - 2⁸ = 28936087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28936297 and 28936306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28936333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830 + ... + 7652.

It is an arithmetic number, because the mean of its divisors is an integer number (7236852).

Almost surely, 2^28936343 is an apocalyptic number.

28936343 is a deficient number, since it is larger than the sum of its proper divisors (11065).

28936343 is an equidigital number, since it uses as much as digits as its factorization.

28936343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11064.

The product of its digits is 93312, while the sum is 38.

The square root of 28936343 is about 5379.2511560625. The cubic root of 28936343 is about 307.0067196413.

The spelling of 28936343 in words is "twenty-eight million, nine hundred thirty-six thousand, three hundred forty-three".