2117928250 has 16 divisors (see below), whose sum is σ = 3964762152. Its totient is φ = 847171200.

The previous prime is 2117928229. The next prime is 2117928257. The reversal of 2117928250 is 528297112.

It can be written as a sum of positive squares in 4 ways, for example, as 87254281 + 2030673969 = 9341^2 + 45063^2 .

It is not an unprimeable number, because it can be changed into a prime (2117928257) 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 7 ways as a sum of consecutive naturals, for example, 4235607 + ... + 4236106.

Almost surely, 2^2117928250 is an apocalyptic number.

2117928250 is a deficient number, since it is larger than the sum of its proper divisors (1846833902).

2117928250 is an equidigital number, since it uses as much as digits as its factorization.

2117928250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8471730 (or 8471720 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 2117928250 is about 46020.9544664167. The cubic root of 2117928250 is about 1284.2130566021.

The spelling of 2117928250 in words is "two billion, one hundred seventeen million, nine hundred twenty-eight thousand, two hundred fifty".