28093993200 has 540 divisors, whose sum is σ = 122145260328. Its totient is φ = 5927040000.

The previous prime is 28093993171. The next prime is 28093993253. The reversal of 28093993200 is 239939082.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 107 ways as a sum of consecutive naturals, for example, 2287075 + ... + 2299325.

Almost surely, 2^28093993200 is an apocalyptic number.

28093993200 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 28093993200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61072630164).

28093993200 is an abundant number, since it is smaller than the sum of its proper divisors (94051267128).

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

28093993200 is a wasteful number, since it uses less digits than its factorization.

28093993200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12302 (or 12281 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 28093993200 in words is "twenty-eight billion, ninety-three million, nine hundred ninety-three thousand, two hundred".