2112640530 has 128 divisors (see below), whose sum is σ = 6807822336. Its totient is φ = 405216000.

The previous prime is 2112640529. The next prime is 2112640561. The reversal of 2112640530 is 350462112.

It is a self number, because there is not a number n which added to its sum of digits gives 2112640530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5146 + ... + 65205.

It is an arithmetic number, because the mean of its divisors is an integer number (53186112).

Almost surely, 2^2112640530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112640530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3403911168).

2112640530 is an abundant number, since it is smaller than the sum of its proper divisors (4695181806).

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

2112640530 is a wasteful number, since it uses less digits than its factorization.

2112640530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70392.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2112640530 is about 45963.4695165628. The cubic root of 2112640530 is about 1283.1434235577.

The spelling of 2112640530 in words is "two billion, one hundred twelve million, six hundred forty thousand, five hundred thirty".