28083929280 has 448 divisors, whose sum is σ = 104454033408. Its totient is φ = 6317015040.

The previous prime is 28083929273. The next prime is 28083929281. The reversal of 28083929280 is 8292938082.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (28083929281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13103889 + ... + 13106031.

Almost surely, 2^28083929280 is an apocalyptic number.

28083929280 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 28083929280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52227016704).

28083929280 is an abundant number, since it is smaller than the sum of its proper divisors (76370104128).

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

28083929280 is a wasteful number, since it uses less digits than its factorization.

28083929280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264 (or 2254 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 28083929280 in words is "twenty-eight billion, eighty-three million, nine hundred twenty-nine thousand, two hundred eighty".