28340875 has 16 divisors (see below), whose sum is σ = 37234080. Its totient is φ = 21477600.

The previous prime is 28340861. The next prime is 28340911. The reversal of 28340875 is 57804382.

It is not a de Polignac number, because 28340875 - 2¹⁷ = 28209803 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3592 + ... + 8341.

It is an arithmetic number, because the mean of its divisors is an integer number (2327130).

Almost surely, 2^28340875 is an apocalyptic number.

28340875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28340875 is a deficient number, since it is larger than the sum of its proper divisors (8893205).

28340875 is a wasteful number, since it uses less digits than its factorization.

28340875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11967 (or 11957 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 28340875 is about 5323.6148433184. The cubic root of 28340875 is about 304.8861888363.

The spelling of 28340875 in words is "twenty-eight million, three hundred forty thousand, eight hundred seventy-five".