2238918 has 16 divisors (see below), whose sum is σ = 4885056. Its totient is φ = 678440.

The previous prime is 2238823. The next prime is 2238931. The reversal of 2238918 is 8198322.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16896 + ... + 17027.

It is an arithmetic number, because the mean of its divisors is an integer number (305316).

2^2238918 is an apocalyptic number.

2238918 is an abundant number, since it is smaller than the sum of its proper divisors (2646138).

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

2238918 is a wasteful number, since it uses less digits than its factorization.

2238918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33939.

The product of its digits is 6912, while the sum is 33.

The square root of 2238918 is about 1496.3014402185. The cubic root of 2238918 is about 130.8215817899.

The spelling of 2238918 in words is "two million, two hundred thirty-eight thousand, nine hundred eighteen".