2116456 has 16 divisors (see below), whose sum is σ = 4034340. Its totient is φ = 1040640.

The previous prime is 2116447. The next prime is 2116459. The reversal of 2116456 is 6546112.

It can be written as a sum of positive squares in 2 ways, for example, as 1359556 + 756900 = 1166^2 + 870^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2116456.

It is not an unprimeable number, because it can be changed into a prime (2116459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1681 + ... + 2656.

2^2116456 is an apocalyptic number.

It is an amenable number.

2116456 is a deficient number, since it is larger than the sum of its proper divisors (1917884).

2116456 is a wasteful number, since it uses less digits than its factorization.

2116456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404 (or 4400 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 2116456 is about 1454.8044542137. The cubic root of 2116456 is about 128.3915419680.

The spelling of 2116456 in words is "two million, one hundred sixteen thousand, four hundred fifty-six".