2168930 has 16 divisors (see below), whose sum is σ = 3949560. Its totient is φ = 857472.

The previous prime is 2168921. The next prime is 2168951. The reversal of 2168930 is 398612.

It can be written as a sum of positive squares in 4 ways, for example, as 1901641 + 267289 = 1379^2 + 517^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2168893 and 2168902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329 + ... + 2108.

2^2168930 is an apocalyptic number.

2168930 is a deficient number, since it is larger than the sum of its proper divisors (1780630).

2168930 is a wasteful number, since it uses less digits than its factorization.

2168930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2168930 is about 1472.7287598197. The cubic root of 2168930 is about 129.4439763034.

The spelling of 2168930 in words is "two million, one hundred sixty-eight thousand, nine hundred thirty".