265240 has 32 divisors (see below), whose sum is σ = 630000. Its totient is φ = 100224.

The previous prime is 265231. The next prime is 265241. The reversal of 265240 is 42562.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586 + ... + 934.

2²⁶⁵²⁴⁰ is an apocalyptic number.

265240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315000).

265240 is an abundant number, since it is smaller than the sum of its proper divisors (364760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265240 is a wasteful number, since it uses less digits than its factorization.

265240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 265240 is about 515.0145629009. The cubic root of 265240 is about 64.2509677013.

It can be divided in two parts, 265 and 240, that added together give a palindrome (505).

The spelling of 265240 in words is "two hundred sixty-five thousand, two hundred forty".