7128184656 has 80 divisors (see below), whose sum is σ = 19353761280. Its totient is φ = 2256355200.

The previous prime is 7128184649. The next prime is 7128184673. The reversal of 7128184656 is 6564818217.

It is a super-2 number, since 2×7128184656² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130231 + ... + 176681.

It is an arithmetic number, because the mean of its divisors is an integer number (241922016).

Almost surely, 2^7128184656 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 7128184656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9676880640).

7128184656 is an abundant number, since it is smaller than the sum of its proper divisors (12225576624).

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

7128184656 is a wasteful number, since it uses less digits than its factorization.

7128184656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46624 (or 46618 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 7128184656 is about 84428.5772472804. The cubic root of 7128184656 is about 1924.5372165537.

The spelling of 7128184656 in words is "seven billion, one hundred twenty-eight million, one hundred eighty-four thousand, six hundred fifty-six".