2261838 has 16 divisors (see below), whose sum is σ = 4538880. Its totient is φ = 751416.

The previous prime is 2261837. The next prime is 2261839. The reversal of 2261838 is 8381622.

It is an interprime number because it is at equal distance from previous prime (2261837) and next prime (2261839).

It is a super-2 number, since 2×2261838² = 10231822276488, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2481 + ... + 3267.

It is an arithmetic number, because the mean of its divisors is an integer number (283680).

2^2261838 is an apocalyptic number.

2261838 is an abundant number, since it is smaller than the sum of its proper divisors (2277042).

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

2261838 is a wasteful number, since it uses less digits than its factorization.

2261838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271.

The product of its digits is 4608, while the sum is 30.

The square root of 2261838 is about 1503.9408233039. The cubic root of 2261838 is about 131.2664777498.

The spelling of 2261838 in words is "two million, two hundred sixty-one thousand, eight hundred thirty-eight".