7128855360 has 420 divisors, whose sum is σ = 27885757284. Its totient is φ = 1727447040.

The previous prime is 7128855343. The next prime is 7128855373. The reversal of 7128855360 is 635588217.

7128855360 is a `hidden beast` number, since 7 + 1 + 288 + 5 + 5 + 360 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4639244544 + 2489610816 = 68112^2 + 49896^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3135184 + ... + 3137456.

Almost surely, 2^7128855360 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 7128855360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13942878642).

7128855360 is an abundant number, since it is smaller than the sum of its proper divisors (20756901924).

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

7128855360 is a wasteful number, since it uses less digits than its factorization.

7128855360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324 (or 2294 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 7128855360 is about 84432.5491738820. The cubic root of 7128855360 is about 1924.5975757424.

The spelling of 7128855360 in words is "seven billion, one hundred twenty-eight million, eight hundred fifty-five thousand, three hundred sixty".