28317075 has 12 divisors (see below), whose sum is σ = 46817688. Its totient is φ = 15102400.

The previous prime is 28317017. The next prime is 28317119. The reversal of 28317075 is 57071382.

It is not a de Polignac number, because 28317075 - 2¹⁸ = 28054931 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 188706 + ... + 188855.

It is an arithmetic number, because the mean of its divisors is an integer number (3901474).

Almost surely, 2^28317075 is an apocalyptic number.

28317075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28317075 is a deficient number, since it is larger than the sum of its proper divisors (18500613).

28317075 is a wasteful number, since it uses less digits than its factorization.

28317075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377574 (or 377569 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 28317075 is about 5321.3790505845. The cubic root of 28317075 is about 304.8008195189.

The spelling of 28317075 in words is "twenty-eight million, three hundred seventeen thousand, seventy-five".