28365275 has 6 divisors (see below), whose sum is σ = 35172972. Its totient is φ = 22692200.

The previous prime is 28365263. The next prime is 28365283. The reversal of 28365275 is 57256382.

It is not a de Polignac number, because 28365275 - 2⁸ = 28365019 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567281 + ... + 567330.

It is an arithmetic number, because the mean of its divisors is an integer number (5862162).

Almost surely, 2^28365275 is an apocalyptic number.

28365275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28365275 is a deficient number, since it is larger than the sum of its proper divisors (6807697).

28365275 is a wasteful number, since it uses less digits than its factorization.

28365275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134621 (or 1134616 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 28365275 is about 5325.9060262081. The cubic root of 28365275 is about 304.9736607193.

The spelling of 28365275 in words is "twenty-eight million, three hundred sixty-five thousand, two hundred seventy-five".