2120731580 has 48 divisors (see below), whose sum is σ = 4890654720. Its totient is φ = 766056000.

The previous prime is 2120731567. The next prime is 2120731597. The reversal of 2120731580 is 851370212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1301 + ... + 65139.

It is an arithmetic number, because the mean of its divisors is an integer number (101888640).

Almost surely, 2^2120731580 is an apocalyptic number.

2120731580 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 2120731580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2445327360).

2120731580 is an abundant number, since it is smaller than the sum of its proper divisors (2769923140).

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

2120731580 is a wasteful number, since it uses less digits than its factorization.

2120731580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64010 (or 64008 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2120731580 is about 46051.4014987601. The cubic root of 2120731580 is about 1284.7794097163.

The spelling of 2120731580 in words is "two billion, one hundred twenty million, seven hundred thirty-one thousand, five hundred eighty".