28678476960 has 576 divisors, whose sum is σ = 117873100800. Its totient is φ = 6340239360.

The previous prime is 28678476949. The next prime is 28678477007. The reversal of 28678476960 is 6967487682.

28678476960 is a `hidden beast` number, since 2 + 8 + 6 + 78 + 476 + 96 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15310584 + ... + 15312456.

It is an arithmetic number, because the mean of its divisors is an integer number (204640800).

Almost surely, 2^28678476960 is an apocalyptic number.

28678476960 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 28678476960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58936550400).

28678476960 is an abundant number, since it is smaller than the sum of its proper divisors (89194623840).

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

28678476960 is a wasteful number, since it uses less digits than its factorization.

28678476960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 1921 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 28678476960 in words is "twenty-eight billion, six hundred seventy-eight million, four hundred seventy-six thousand, nine hundred sixty".