2275638 has 8 divisors (see below), whose sum is σ = 4551288. Its totient is φ = 758544.

The previous prime is 2275633. The next prime is 2275639. The reversal of 2275638 is 8365722.

2275638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2275638 is an admirable number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2275599 and 2275608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2275633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189631 + ... + 189642.

It is an arithmetic number, because the mean of its divisors is an integer number (568911).

2^2275638 is an apocalyptic number.

2275638 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.

2275638 is a wasteful number, since it uses less digits than its factorization.

2275638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379278.

The product of its digits is 20160, while the sum is 33.

The square root of 2275638 is about 1508.5217930146. The cubic root of 2275638 is about 131.5328990921.

The spelling of 2275638 in words is "two million, two hundred seventy-five thousand, six hundred thirty-eight".