28865731075 has 12 divisors (see below), whose sum is σ = 35973379600. Its totient is φ = 22976537760.

The previous prime is 28865731049. The next prime is 28865731099. The reversal of 28865731075 is 57013756882.

It is a happy number.

It is not a de Polignac number, because 28865731075 - 2¹¹ = 28865729027 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2896104 + ... + 2906053.

Almost surely, 2^28865731075 is an apocalyptic number.

28865731075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28865731075 is a deficient number, since it is larger than the sum of its proper divisors (7107648525).

28865731075 is a wasteful number, since it uses less digits than its factorization.

28865731075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5802366 (or 5802361 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 28865731075 in words is "twenty-eight billion, eight hundred sixty-five million, seven hundred thirty-one thousand, seventy-five".