2238686 has 4 divisors (see below), whose sum is σ = 3358032. Its totient is φ = 1119342.

The previous prime is 2238673. The next prime is 2238703. The reversal of 2238686 is 6868322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6868322 = 2 ⋅3434161.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559670 + ... + 559673.

It is an arithmetic number, because the mean of its divisors is an integer number (839508).

2^2238686 is an apocalyptic number.

2238686 is a deficient number, since it is larger than the sum of its proper divisors (1119346).

2238686 is a wasteful number, since it uses less digits than its factorization.

2238686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119345.

The product of its digits is 27648, while the sum is 35.

The square root of 2238686 is about 1496.2239137241. The cubic root of 2238686 is about 130.8170629917.

The spelling of 2238686 in words is "two million, two hundred thirty-eight thousand, six hundred eighty-six".