2115729234 has 20 divisors (see below), whose sum is σ = 4740801054. Its totient is φ = 705243024.

The previous prime is 2115729233. The next prime is 2115729241. The reversal of 2115729234 is 4329275112.

It can be written as a sum of positive squares in only one way, i.e., 1142102025 + 973627209 = 33795^2 + 31203^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2115729233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6529867 + ... + 6530190.

Almost surely, 2^2115729234 is an apocalyptic number.

2115729234 is an abundant number, since it is smaller than the sum of its proper divisors (2625071820).

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

2115729234 is a wasteful number, since it uses less digits than its factorization.

2115729234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060071 (or 13060062 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2115729234 is about 45997.0567971474. The cubic root of 2115729234 is about 1283.7684423903.

The spelling of 2115729234 in words is "two billion, one hundred fifteen million, seven hundred twenty-nine thousand, two hundred thirty-four".