2120818 has 48 divisors (see below), whose sum is σ = 4186080. Its totient is φ = 798336.

The previous prime is 2120779. The next prime is 2120819. The reversal of 2120818 is 8180212.

It is not an unprimeable number, because it can be changed into a prime (2120819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31621 + ... + 31687.

It is an arithmetic number, because the mean of its divisors is an integer number (87210).

2^2120818 is an apocalyptic number.

2120818 is a deficient number, since it is larger than the sum of its proper divisors (2065262).

2120818 is a wasteful number, since it uses less digits than its factorization.

2120818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 2120818 is about 1456.3028531181. The cubic root of 2120818 is about 128.4796861104.

The spelling of 2120818 in words is "two million, one hundred twenty thousand, eight hundred eighteen".