2218704 has 40 divisors (see below), whose sum is σ = 6071040. Its totient is φ = 695808.

The previous prime is 2218691. The next prime is 2218709. The reversal of 2218704 is 4078122.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544 + ... + 2175.

It is an arithmetic number, because the mean of its divisors is an integer number (151776).

2^2218704 is an apocalyptic number.

2218704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2218704 is an abundant number, since it is smaller than the sum of its proper divisors (3852336).

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

2218704 is a wasteful number, since it uses less digits than its factorization.

2218704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2218704 is about 1489.5314699596. The cubic root of 2218704 is about 130.4266847920.

The spelling of 2218704 in words is "two million, two hundred eighteen thousand, seven hundred four".