2685147920 has 160 divisors (see below), whose sum is σ = 7721505792. Its totient is φ = 845623296.

The previous prime is 2685147859. The next prime is 2685147967. The reversal of 2685147920 is 297415862.

It is a happy 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, 1695449 + ... + 1697031.

Almost surely, 2^2685147920 is an apocalyptic number.

2685147920 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 2685147920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3860752896).

2685147920 is an abundant number, since it is smaller than the sum of its proper divisors (5036357872).

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

2685147920 is a wasteful number, since it uses less digits than its factorization.

2685147920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 2685147920 is about 51818.4129436632. The cubic root of 2685147920 is about 1389.9187227116.

The spelling of 2685147920 in words is "two billion, six hundred eighty-five million, one hundred forty-seven thousand, nine hundred twenty".