28467956880 has 480 divisors, whose sum is σ = 112774746240. Its totient is φ = 6360145920.

The previous prime is 28467956879. The next prime is 28467956903. The reversal of 28467956880 is 8865976482.

28467956880 is a `hidden beast` number, since 2 + 8 + 4 + 67 + 9 + 568 + 8 + 0 = 666.

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 95 ways as a sum of consecutive naturals, for example, 5565204 + ... + 5570316.

It is an arithmetic number, because the mean of its divisors is an integer number (234947388).

Almost surely, 2^28467956880 is an apocalyptic number.

28467956880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28467956880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56387373120).

28467956880 is an abundant number, since it is smaller than the sum of its proper divisors (84306789360).

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

28467956880 is a wasteful number, since it uses less digits than its factorization.

28467956880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199 (or 5190 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 28467956880 in words is "twenty-eight billion, four hundred sixty-seven million, nine hundred fifty-six thousand, eight hundred eighty".