243626 has 8 divisors (see below), whose sum is σ = 368004. Its totient is φ = 120960.

The previous prime is 243623. The next prime is 243631. The reversal of 243626 is 626342.

It can be written as a sum of positive squares in 2 ways, for example, as 201601 + 42025 = 449^2 + 205^2 .

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

It is not an unprimeable number, because it can be changed into a prime (243623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26 + ... + 698.

2²⁴³⁶²⁶ is an apocalyptic number.

243626 is a deficient number, since it is larger than the sum of its proper divisors (124378).

243626 is a wasteful number, since it uses less digits than its factorization.

243626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its digits is 1728, while the sum is 23.

The square root of 243626 is about 493.5848457965. The cubic root of 243626 is about 62.4560544412.

Adding to 243626 its reverse (626342), we get a palindrome (869968).

It can be divided in two parts, 2436 and 26, that multiplied together give a palindrome (63336).

The spelling of 243626 in words is "two hundred forty-three thousand, six hundred twenty-six".