28069343 has 4 divisors (see below), whose sum is σ = 28173960. Its totient is φ = 27964728.

The previous prime is 28069331. The next prime is 28069373. The reversal of 28069343 is 34396082.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28069343 - 2¹⁰ = 28068319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28069373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51905 + ... + 52442.

It is an arithmetic number, because the mean of its divisors is an integer number (7043490).

Almost surely, 2^28069343 is an apocalyptic number.

28069343 is a deficient number, since it is larger than the sum of its proper divisors (104617).

28069343 is a wasteful number, since it uses less digits than its factorization.

28069343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104616.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 28069343 is about 5298.0508680080. The cubic root of 28069343 is about 303.9093645720.

The spelling of 28069343 in words is "twenty-eight million, sixty-nine thousand, three hundred forty-three".