2168456 has 8 divisors (see below), whose sum is σ = 4065870. Its totient is φ = 1084224.

The previous prime is 2168437. The next prime is 2168473. The reversal of 2168456 is 6548612.

It can be written as a sum of positive squares in only one way, i.e., 1865956 + 302500 = 1366^2 + 550^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 135521 + ... + 135536.

2^2168456 is an apocalyptic number.

It is an amenable number.

2168456 is a deficient number, since it is larger than the sum of its proper divisors (1897414).

2168456 is a wasteful number, since it uses less digits than its factorization.

2168456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271063 (or 271059 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 2168456 is about 1472.5678252631. The cubic root of 2168456 is about 129.4345460137.

The spelling of 2168456 in words is "two million, one hundred sixty-eight thousand, four hundred fifty-six".