28985875375 has 32 divisors (see below), whose sum is σ = 37178856000. Its totient is φ = 22549564800.

The previous prime is 28985875367. The next prime is 28985875379. The reversal of 28985875375 is 57357858982.

It is not a de Polignac number, because 28985875375 - 2³ = 28985875367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28985875375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28985875379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1219101 + ... + 1242649.

It is an arithmetic number, because the mean of its divisors is an integer number (1161839250).

Almost surely, 2^28985875375 is an apocalyptic number.

28985875375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28985875375 is a deficient number, since it is larger than the sum of its proper divisors (8192980625).

28985875375 is a wasteful number, since it uses less digits than its factorization.

28985875375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23836 (or 23826 counting only the distinct ones).

The product of its digits is 169344000, while the sum is 67.

The spelling of 28985875375 in words is "twenty-eight billion, nine hundred eighty-five million, eight hundred seventy-five thousand, three hundred seventy-five".