2243642 has 8 divisors (see below), whose sum is σ = 3388500. Its totient is φ = 1114144.

The previous prime is 2243623. The next prime is 2243663. The reversal of 2243642 is 2463422.

It can be written as a sum of positive squares in 2 ways, for example, as 2042041 + 201601 = 1429^2 + 449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3467 + ... + 4062.

2^2243642 is an apocalyptic number.

2243642 is a deficient number, since it is larger than the sum of its proper divisors (1144858).

2243642 is a wasteful number, since it uses less digits than its factorization.

2243642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7680.

The product of its digits is 2304, while the sum is 23.

The square root of 2243642 is about 1497.8791673563. The cubic root of 2243642 is about 130.9135260551.

The spelling of 2243642 in words is "two million, two hundred forty-three thousand, six hundred forty-two".