28718303976 has 256 divisors, whose sum is σ = 87759936000. Its totient is φ = 8671703040.

The previous prime is 28718303959. The next prime is 28718303981. The reversal of 28718303976 is 67930381782.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7633936 + ... + 7637696.

It is an arithmetic number, because the mean of its divisors is an integer number (342812250).

Almost surely, 2^28718303976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28718303976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43879968000).

28718303976 is an abundant number, since it is smaller than the sum of its proper divisors (59041632024).

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

28718303976 is a wasteful number, since it uses less digits than its factorization.

28718303976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881 (or 3871 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 28718303976 in words is "twenty-eight billion, seven hundred eighteen million, three hundred three thousand, nine hundred seventy-six".