2129724852 has 72 divisors (see below), whose sum is σ = 5171816832. Its totient is φ = 682080000.

The previous prime is 2129724851. The next prime is 2129724853. The reversal of 2129724852 is 2584279212.

It is an interprime number because it is at equal distance from previous prime (2129724851) and next prime (2129724853).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129724851) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2835477 + ... + 2836227.

Almost surely, 2^2129724852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2129724852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2585908416).

2129724852 is an abundant number, since it is smaller than the sum of its proper divisors (3042091980).

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

2129724852 is a wasteful number, since it uses less digits than its factorization.

2129724852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 1066 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2129724852 is about 46148.9420463785. The cubic root of 2129724852 is about 1286.5929468473.

The spelling of 2129724852 in words is "two billion, one hundred twenty-nine million, seven hundred twenty-four thousand, eight hundred fifty-two".