2236638 has 8 divisors (see below), whose sum is σ = 4473288. Its totient is φ = 745544.

The previous prime is 2236627. The next prime is 2236651. The reversal of 2236638 is 8366322.

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

2236638 is an admirable number.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 3² + 6² + 6⁴ + 3⁸ + 8³ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186381 + ... + 186392.

It is an arithmetic number, because the mean of its divisors is an integer number (559161).

2^2236638 is an apocalyptic number.

2236638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2236638 is a wasteful number, since it uses less digits than its factorization.

2236638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372778.

The product of its digits is 10368, while the sum is 30.

The square root of 2236638 is about 1495.5393675862. The cubic root of 2236638 is about 130.7771593631. Note that the first 3 decimals are identical.

The spelling of 2236638 in words is "two million, two hundred thirty-six thousand, six hundred thirty-eight".