28312198200 has 432 divisors, whose sum is σ = 112331526840. Its totient is φ = 6334848000.

The previous prime is 28312198193. The next prime is 28312198231. The reversal of 28312198200 is 289121382.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3341970 + ... + 3350430.

Almost surely, 2^28312198200 is an apocalyptic number.

28312198200 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 28312198200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56165763420).

28312198200 is an abundant number, since it is smaller than the sum of its proper divisors (84019328640).

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

28312198200 is a wasteful number, since it uses less digits than its factorization.

28312198200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520 (or 8495 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 28312198200 in words is "twenty-eight billion, three hundred twelve million, one hundred ninety-eight thousand, two hundred".