28666872463752 has 64 divisors (see below), whose sum is σ = 79631414136000. Its totient is φ = 9555478612992.

The previous prime is 28666872463729. The next prime is 28666872463763. The reversal of 28666872463752 is 25736427866682.

It is a Harshad number since it is a multiple of its sum of digits (72).

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 15 ways as a sum of consecutive naturals, for example, 13698088 + ... + 15651560.

It is an arithmetic number, because the mean of its divisors is an integer number (1244240845875).

Almost surely, 2^{28666872463752} is an apocalyptic number.

It is an amenable number.

28666872463752 is an abundant number, since it is smaller than the sum of its proper divisors (50964541672248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28666872463752 is a wasteful number, since it uses less digits than its factorization.

28666872463752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021427 (or 2021417 counting only the distinct ones).

The product of its digits is 1950842880, while the sum is 72.

The spelling of 28666872463752 in words is "twenty-eight trillion, six hundred sixty-six billion, eight hundred seventy-two million, four hundred sixty-three thousand, seven hundred fifty-two".