28867207680 has 800 divisors, whose sum is σ = 115504392960. Its totient is φ = 6847856640.

The previous prime is 28867207669. The next prime is 28867207709. The reversal of 28867207680 is 8670276882.

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 79 ways as a sum of consecutive naturals, for example, 66977065 + ... + 66977495.

Almost surely, 2^28867207680 is an apocalyptic number.

28867207680 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 28867207680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57752196480).

28867207680 is an abundant number, since it is smaller than the sum of its proper divisors (86637185280).

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

28867207680 is a wasteful number, since it uses less digits than its factorization.

28867207680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 28867207680 in words is "twenty-eight billion, eight hundred sixty-seven million, two hundred seven thousand, six hundred eighty".