240826 has 4 divisors (see below), whose sum is σ = 361242. Its totient is φ = 120412.

The previous prime is 240811. The next prime is 240829. The reversal of 240826 is 628042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 628042 = 2 ⋅314021.

It can be written as a sum of positive squares in only one way, i.e., 121801 + 119025 = 349^2 + 345^2 .

It is a junction number, because it is equal to n+sod(n) for n = 240797 and 240806.

It is not an unprimeable number, because it can be changed into a prime (240829) by changing a digit.

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 as a sum of consecutive naturals, namely, 60205 + ... + 60208.

2²⁴⁰⁸²⁶ is an apocalyptic number.

240826 is a deficient number, since it is larger than the sum of its proper divisors (120416).

240826 is a wasteful number, since it uses less digits than its factorization.

240826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120415.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 240826 is about 490.7402571626. The cubic root of 240826 is about 62.2158622090.

Adding to 240826 its reverse (628042), we get a palindrome (868868).

The spelling of 240826 in words is "two hundred forty thousand, eight hundred twenty-six".