28348943 has 16 divisors (see below), whose sum is σ = 33331200. Its totient is φ = 23607936.

The previous prime is 28348939. The next prime is 28348961. The reversal of 28348943 is 34984382.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28348943 - 2² = 28348939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28348943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28348933) 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 15 ways as a sum of consecutive naturals, for example, 65255 + ... + 65687.

It is an arithmetic number, because the mean of its divisors is an integer number (2083200).

Almost surely, 2^28348943 is an apocalyptic number.

28348943 is a deficient number, since it is larger than the sum of its proper divisors (4982257).

28348943 is a wasteful number, since it uses less digits than its factorization.

28348943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686.

The product of its digits is 165888, while the sum is 41.

The square root of 28348943 is about 5324.3725451925. The cubic root of 28348943 is about 304.9151174702.

The spelling of 28348943 in words is "twenty-eight million, three hundred forty-eight thousand, nine hundred forty-three".