2243870 has 16 divisors (see below), whose sum is σ = 4056048. Its totient is φ = 893760.

The previous prime is 2243851. The next prime is 2243887. The reversal of 2243870 is 783422.

2243870 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-3 number, since 3×2243870³ = 33893337116185809000, which contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4325 + ... + 4815.

It is an arithmetic number, because the mean of its divisors is an integer number (253503).

2^2243870 is an apocalyptic number.

2243870 is a deficient number, since it is larger than the sum of its proper divisors (1812178).

2243870 is a wasteful number, since it uses less digits than its factorization.

2243870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2243870 is about 1497.9552730305. The cubic root of 2243870 is about 130.9179604038.

It can be divided in two parts, 2243 and 870, that added together give a palindrome (3113).

The spelling of 2243870 in words is "two million, two hundred forty-three thousand, eight hundred seventy".