28067089680 has 400 divisors, whose sum is σ = 112573211520. Its totient is φ = 6348201984.

The previous prime is 28067089679. The next prime is 28067089703. The reversal of 28067089680 is 8698076082.

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, 4396731 + ... + 4403109.

Almost surely, 2^28067089680 is an apocalyptic number.

28067089680 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 28067089680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56286605760).

28067089680 is an abundant number, since it is smaller than the sum of its proper divisors (84506121840).

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

28067089680 is a wasteful number, since it uses less digits than its factorization.

28067089680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6508 (or 6493 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 28067089680 in words is "twenty-eight billion, sixty-seven million, eighty-nine thousand, six hundred eighty".