2238090 has 32 divisors (see below), whose sum is σ = 5463936. Its totient is φ = 586560.

The previous prime is 2238079. The next prime is 2238091. The reversal of 2238090 is 908322.

It is a Curzon number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 2238090.

It is not an unprimeable number, because it can be changed into a prime (2238091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219 + ... + 2441.

It is an arithmetic number, because the mean of its divisors is an integer number (170748).

2^2238090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2238090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2731968).

2238090 is an abundant number, since it is smaller than the sum of its proper divisors (3225846).

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

2238090 is a wasteful number, since it uses less digits than its factorization.

2238090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2238090 is about 1496.0247324159. The cubic root of 2238090 is about 130.8054529238.

The spelling of 2238090 in words is "two million, two hundred thirty-eight thousand, ninety".