2243862 has 44 divisors (see below), whose sum is σ = 5314380. Its totient is φ = 708588.

The previous prime is 2243851. The next prime is 2243887. The reversal of 2243862 is 2683422.

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

Its product of digits (4608) is a multiple of the sum of its prime divisors (24).

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 118089 + ... + 118107.

2^2243862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2243862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2657190).

2243862 is an abundant number, since it is smaller than the sum of its proper divisors (3070518).

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

2243862 is an frugal number, since it uses more digits than its factorization.

2243862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51 (or 24 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 2243862 is about 1497.9526027215. The cubic root of 2243862 is about 130.9178048177.

It can be divided in two parts, 22438 and 62, that added together give a square (22500 = 150²).

The spelling of 2243862 in words is "two million, two hundred forty-three thousand, eight hundred sixty-two".