28397675 has 12 divisors (see below), whose sum is σ = 35611560. Its totient is φ = 22461120.

The previous prime is 28397671. The next prime is 28397683. The reversal of 28397675 is 57679382.

It is not a de Polignac number, because 28397675 - 2² = 28397671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28397671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4157 + ... + 8606.

It is an arithmetic number, because the mean of its divisors is an integer number (2967630).

Almost surely, 2^28397675 is an apocalyptic number.

28397675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28397675 is a deficient number, since it is larger than the sum of its proper divisors (7213885).

28397675 is a wasteful number, since it uses less digits than its factorization.

28397675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12862 (or 12857 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 28397675 is about 5328.9468940870. The cubic root of 28397675 is about 305.0897344135.

The spelling of 28397675 in words is "twenty-eight million, three hundred ninety-seven thousand, six hundred seventy-five".