2118704 has 20 divisors (see below), whose sum is σ = 4691664. Its totient is φ = 907968.

The previous prime is 2118703. The next prime is 2118733. The reversal of 2118704 is 4078112.

It is a self number, because there is not a number n which added to its sum of digits gives 2118704.

It is not an unprimeable number, because it can be changed into a prime (2118703) 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, 9347 + ... + 9570.

2^2118704 is an apocalyptic number.

It is an amenable number.

2118704 is an abundant number, since it is smaller than the sum of its proper divisors (2572960).

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

2118704 is a wasteful number, since it uses less digits than its factorization.

2118704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18932 (or 18926 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 2118704 is about 1455.5768615913. The cubic root of 2118704 is about 128.4369830354.

The spelling of 2118704 in words is "two million, one hundred eighteen thousand, seven hundred four".