28343275 has 6 divisors (see below), whose sum is σ = 35145692. Its totient is φ = 22674600.

The previous prime is 28343261. The next prime is 28343279. The reversal of 28343275 is 57234382.

It is not a de Polignac number, because 28343275 - 2⁵ = 28343243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28343275.

It is not an unprimeable number, because it can be changed into a prime (28343279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 566841 + ... + 566890.

Almost surely, 2^28343275 is an apocalyptic number.

28343275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28343275 is a deficient number, since it is larger than the sum of its proper divisors (6802417).

28343275 is a wasteful number, since it uses less digits than its factorization.

28343275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133741 (or 1133736 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 28343275 is about 5323.8402492937. The cubic root of 28343275 is about 304.8947948538.

The spelling of 28343275 in words is "twenty-eight million, three hundred forty-three thousand, two hundred seventy-five".