7287827988 has 96 divisors (see below), whose sum is σ = 21133695744. Its totient is φ = 1906771968.

The previous prime is 7287827947. The next prime is 7287828007. The reversal of 7287827988 is 8897287827.

It is a super-2 number, since 2×7287827988² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16131 + ... + 121802.

It is an arithmetic number, because the mean of its divisors is an integer number (220142664).

Almost surely, 2^7287827988 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 7287827988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10566847872).

7287827988 is an abundant number, since it is smaller than the sum of its proper divisors (13845867756).

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

7287827988 is a wasteful number, since it uses less digits than its factorization.

7287827988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138001 (or 137999 counting only the distinct ones).

The product of its digits is 50577408, while the sum is 66.

The square root of 7287827988 is about 85368.7764232333. The cubic root of 7287827988 is about 1938.7986316124.

The spelling of 7287827988 in words is "seven billion, two hundred eighty-seven million, eight hundred twenty-seven thousand, nine hundred eighty-eight".