2218742 has 8 divisors (see below), whose sum is σ = 3418176. Its totient is φ = 1079352.

The previous prime is 2218709. The next prime is 2218751. The reversal of 2218742 is 2478122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14918 + ... + 15065.

It is an arithmetic number, because the mean of its divisors is an integer number (427272).

2^2218742 is an apocalyptic number.

2218742 is a deficient number, since it is larger than the sum of its proper divisors (1199434).

2218742 is a wasteful number, since it uses less digits than its factorization.

2218742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30022.

The product of its digits is 1792, while the sum is 26.

The square root of 2218742 is about 1489.5442255939. The cubic root of 2218742 is about 130.4274293987.

The spelling of 2218742 in words is "two million, two hundred eighteen thousand, seven hundred forty-two".