2239845820 has 12 divisors (see below), whose sum is σ = 4703676264. Its totient is φ = 895938320.

The previous prime is 2239845809. The next prime is 2239845833. The reversal of 2239845820 is 285489322.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55996126 + ... + 55996165.

It is an arithmetic number, because the mean of its divisors is an integer number (391973022).

Almost surely, 2^2239845820 is an apocalyptic number.

2239845820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2239845820 is an abundant number, since it is smaller than the sum of its proper divisors (2463830444).

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

2239845820 is a wasteful number, since it uses less digits than its factorization.

2239845820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111992300 (or 111992298 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 2239845820 is about 47327.0094132304. The cubic root of 2239845820 is about 1308.3965035650.

The spelling of 2239845820 in words is "two billion, two hundred thirty-nine million, eight hundred forty-five thousand, eight hundred twenty".