2170992340 has 24 divisors (see below), whose sum is σ = 4973546592. Its totient is φ = 789451680.

The previous prime is 2170992319. The next prime is 2170992359. The reversal of 2170992340 is 432990712.

It is a self number, because there is not a number n which added to its sum of digits gives 2170992340.

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, 4933854 + ... + 4934293.

It is an arithmetic number, because the mean of its divisors is an integer number (207231108).

Almost surely, 2^2170992340 is an apocalyptic number.

2170992340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2170992340 is an abundant number, since it is smaller than the sum of its proper divisors (2802554252).

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

2170992340 is a wasteful number, since it uses less digits than its factorization.

2170992340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9868167 (or 9868165 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 2170992340 is about 46593.9088293738. The cubic root of 2170992340 is about 1294.8499083166.

The spelling of 2170992340 in words is "two billion, one hundred seventy million, nine hundred ninety-two thousand, three hundred forty".