240356 has 6 divisors (see below), whose sum is σ = 420630. Its totient is φ = 120176.

The previous prime is 240353. The next prime is 240371. The reversal of 240356 is 653042.

It can be written as a sum of positive squares in only one way, i.e., 240100 + 256 = 490^2 + 16^2 .

It is not an unprimeable number, because it can be changed into a prime (240353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30041 + ... + 30048.

It is an arithmetic number, because the mean of its divisors is an integer number (70105).

2²⁴⁰³⁵⁶ is an apocalyptic number.

It is an amenable number.

240356 is a deficient number, since it is larger than the sum of its proper divisors (180274).

240356 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 240356 = (405632)₉.

240356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60093 (or 60091 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 240356 is about 490.2611548960. The cubic root of 240356 is about 62.1753620158.

Adding to 240356 its reverse (653042), we get a palindrome (893398).

Subtracting 240356 from its reverse (653042), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 240356 in words is "two hundred forty thousand, three hundred fifty-six".