2128830840 has 96 divisors (see below), whose sum is σ = 7157311200. Its totient is φ = 548110080.

The previous prime is 2128830817. The next prime is 2128830857. The reversal of 2128830840 is 480388212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2128830795 and 2128830804.

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, 91516 + ... + 112395.

It is an arithmetic number, because the mean of its divisors is an integer number (74555325).

Almost surely, 2^2128830840 is an apocalyptic number.

2128830840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128830840 is an abundant number, since it is smaller than the sum of its proper divisors (5028480360).

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

2128830840 is a wasteful number, since it uses less digits than its factorization.

2128830840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203957 (or 203950 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 2128830840 is about 46139.2548704463. The cubic root of 2128830840 is about 1286.4128937735.

The spelling of 2128830840 in words is "two billion, one hundred twenty-eight million, eight hundred thirty thousand, eight hundred forty".