28123393200 has 600 divisors, whose sum is σ = 108014985408. Its totient is φ = 6251051520.

The previous prime is 28123393171. The next prime is 28123393237. The reversal of 28123393200 is 239332182.

It is a tau number, because it is divible by the number of its divisors (600).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 123891487 + ... + 123891713.

Almost surely, 2^28123393200 is an apocalyptic number.

28123393200 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 28123393200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54007492704).

28123393200 is an abundant number, since it is smaller than the sum of its proper divisors (79891592208).

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

28123393200 is a wasteful number, since it uses less digits than its factorization.

28123393200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 28123393200 in words is "twenty-eight billion, one hundred twenty-three million, three hundred ninety-three thousand, two hundred".