2128855360 has 28 divisors (see below), whose sum is σ = 5069337588. Its totient is φ = 851542016.

The previous prime is 2128855357. The next prime is 2128855363. The reversal of 2128855360 is 635588212.

It is an interprime number because it is at equal distance from previous prime (2128855357) and next prime (2128855363).

It can be written as a sum of positive squares in 2 ways, for example, as 263997504 + 1864857856 = 16248^2 + 43184^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128855363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3326017 + ... + 3326656.

It is an arithmetic number, because the mean of its divisors is an integer number (181047771).

Almost surely, 2^2128855360 is an apocalyptic number.

2128855360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128855360 is an abundant number, since it is smaller than the sum of its proper divisors (2940482228).

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

2128855360 is an equidigital number, since it uses as much as digits as its factorization.

2128855360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6652690 (or 6652680 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 2128855360 is about 46139.5205870195. The cubic root of 2128855360 is about 1286.4178327478.

The spelling of 2128855360 in words is "two billion, one hundred twenty-eight million, eight hundred fifty-five thousand, three hundred sixty".