28297675 has 24 divisors (see below), whose sum is σ = 40524192. Its totient is φ = 19200000.

The previous prime is 28297657. The next prime is 28297679. The reversal of 28297675 is 57679282.

It is not a de Polignac number, because 28297675 - 2¹³ = 28289483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28297679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16875 + ... + 18475.

It is an arithmetic number, because the mean of its divisors is an integer number (1688508).

Almost surely, 2^28297675 is an apocalyptic number.

28297675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28297675 is a deficient number, since it is larger than the sum of its proper divisors (12226517).

28297675 is a wasteful number, since it uses less digits than its factorization.

28297675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719 (or 1714 counting only the distinct ones).

The product of its digits is 423360, while the sum is 46.

The square root of 28297675 is about 5319.5559025167. Note that the first 3 decimals coincide. The cubic root of 28297675 is about 304.7311973707.

The spelling of 28297675 in words is "twenty-eight million, two hundred ninety-seven thousand, six hundred seventy-five".