2261844 has 72 divisors (see below), whose sum is σ = 6420960. Its totient is φ = 692064.

The previous prime is 2261839. The next prime is 2261851. The reversal of 2261844 is 4481622.

2261844 is a `hidden beast` number, since 2 + 2 + 618 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12547 + ... + 12725.

It is an arithmetic number, because the mean of its divisors is an integer number (89180).

2^2261844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2261844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3210480).

2261844 is an abundant number, since it is smaller than the sum of its proper divisors (4159116).

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

2261844 is a wasteful number, since it uses less digits than its factorization.

2261844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 197 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 2261844 is about 1503.9428180619. The cubic root of 2261844 is about 131.2665938203.

The spelling of 2261844 in words is "two million, two hundred sixty-one thousand, eight hundred forty-four".