7991227200 has 252 divisors, whose sum is σ = 28820099840. Its totient is φ = 1937126400.

The previous prime is 7991227193. The next prime is 7991227207. The reversal of 7991227200 is 27221997.

It is an interprime number because it is at equal distance from previous prime (7991227193) and next prime (7991227207).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7991227207) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 573921 + ... + 587679.

Almost surely, 2^7991227200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7991227200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14410049920).

7991227200 is an abundant number, since it is smaller than the sum of its proper divisors (20828872640).

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

7991227200 is a wasteful number, since it uses less digits than its factorization.

7991227200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13806 (or 13780 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 7991227200 is about 89393.6642050207. The cubic root of 7991227200 is about 1999.2686659412.

The spelling of 7991227200 in words is "seven billion, nine hundred ninety-one million, two hundred twenty-seven thousand, two hundred".