2685239220 has 96 divisors (see below), whose sum is σ = 8169799680. Its totient is φ = 656484480.

The previous prime is 2685239209. The next prime is 2685239243. The reversal of 2685239220 is 229325862.

2685239220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2652 + ... + 73331.

It is an arithmetic number, because the mean of its divisors is an integer number (85102080).

Almost surely, 2^2685239220 is an apocalyptic number.

2685239220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2685239220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4084899840).

2685239220 is an abundant number, since it is smaller than the sum of its proper divisors (5484560460).

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

2685239220 is a wasteful number, since it uses less digits than its factorization.

2685239220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76045 (or 76043 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 2685239220 is about 51819.2938971576. The cubic root of 2685239220 is about 1389.9344758030.

The spelling of 2685239220 in words is "two billion, six hundred eighty-five million, two hundred thirty-nine thousand, two hundred twenty".