28115347200 has 216 divisors, whose sum is σ = 96822219648. Its totient is φ = 7171338240.

The previous prime is 28115347189. The next prime is 28115347217. The reversal of 28115347200 is 274351182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409767 + ... + 473433.

Almost surely, 2^28115347200 is an apocalyptic number.

28115347200 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 28115347200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48411109824).

28115347200 is an abundant number, since it is smaller than the sum of its proper divisors (68706872448).

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

28115347200 is a wasteful number, since it uses less digits than its factorization.

28115347200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63719 (or 63700 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

Adding to 28115347200 its reverse (274351182), we get a palindrome (28389698382).

The spelling of 28115347200 in words is "twenty-eight billion, one hundred fifteen million, three hundred forty-seven thousand, two hundred".