28378675 has 24 divisors (see below), whose sum is σ = 39216240. Its totient is φ = 20227200.

The previous prime is 28378639. The next prime is 28378681. The reversal of 28378675 is 57687382.

It is not a de Polignac number, because 28378675 - 2¹¹ = 28376627 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 23 ways as a sum of consecutive naturals, for example, 7920 + ... + 10930.

It is an arithmetic number, because the mean of its divisors is an integer number (1634010).

Almost surely, 2^28378675 is an apocalyptic number.

28378675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28378675 is a deficient number, since it is larger than the sum of its proper divisors (10837565).

28378675 is a wasteful number, since it uses less digits than its factorization.

28378675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063 (or 3058 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 28378675 is about 5327.1638795892. The cubic root of 28378675 is about 305.0216772195.

The spelling of 28378675 in words is "twenty-eight million, three hundred seventy-eight thousand, six hundred seventy-five".