2261886 has 32 divisors (see below), whose sum is σ = 5056128. Its totient is φ = 668640.

The previous prime is 2261863. The next prime is 2261887. The reversal of 2261886 is 6881622.

2261886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2261886² = 10232256553992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261887) 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 15 ways as a sum of consecutive naturals, for example, 2440 + ... + 3236.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

2^2261886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2261886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2528064).

2261886 is an abundant number, since it is smaller than the sum of its proper divisors (2794242).

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

2261886 is a wasteful number, since it uses less digits than its factorization.

2261886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

The product of its digits is 9216, while the sum is 33.

The square root of 2261886 is about 1503.9567812939. The cubic root of 2261886 is about 131.2674063083.

It can be divided in two parts, 226188 and 6, that multiplied together give a triangular number (1357128 = T₁₆₄₇).

The spelling of 2261886 in words is "two million, two hundred sixty-one thousand, eight hundred eighty-six".