2120572830 has 16 divisors (see below), whose sum is σ = 5089374864. Its totient is φ = 565486080.

The previous prime is 2120572819. The next prime is 2120572889. The reversal of 2120572830 is 382750212.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 70685761 = 2120572830 / (2 + 1 + 2 + 0 + 5 + 7 + 2 + 8 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35342851 + ... + 35342910.

It is an arithmetic number, because the mean of its divisors is an integer number (318085929).

Almost surely, 2^2120572830 is an apocalyptic number.

2120572830 is an abundant number, since it is smaller than the sum of its proper divisors (2968802034).

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

2120572830 is a wasteful number, since it uses less digits than its factorization.

2120572830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70685771.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2120572830 is about 46049.6778490360. The cubic root of 2120572830 is about 1284.7473509961.

The spelling of 2120572830 in words is "two billion, one hundred twenty million, five hundred seventy-two thousand, eight hundred thirty".