7331983128 has 96 divisors (see below), whose sum is σ = 20438645760. Its totient is φ = 2373497280.

The previous prime is 7331983117. The next prime is 7331983151. The reversal of 7331983128 is 8213891337.

It is a happy number.

It is a Cunningham number, because it is equal to 85627²-1.

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, 331801 + ... + 353207.

It is an arithmetic number, because the mean of its divisors is an integer number (212902560).

Almost surely, 2^7331983128 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 7331983128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10219322880).

7331983128 is an abundant number, since it is smaller than the sum of its proper divisors (13106662632).

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

7331983128 is a wasteful number, since it uses less digits than its factorization.

7331983128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21557 (or 21550 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 7331983128 is about 85626.9999941607. Note that the first 5 decimals coincide. The cubic root of 7331983128 is about 1942.7063167909.

The spelling of 7331983128 in words is "seven billion, three hundred thirty-one million, nine hundred eighty-three thousand, one hundred twenty-eight".