265438 has 16 divisors (see below), whose sum is σ = 435024. Its totient is φ = 120960.

The previous prime is 265427. The next prime is 265451. The reversal of 265438 is 834562.

It is a d-powerful number, because it can be written as 2⁷ + 6 + 4⁹ + 5⁵ + 3³ + 8 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153 + ... + 1363.

It is an arithmetic number, because the mean of its divisors is an integer number (27189).

2²⁶⁵⁴³⁸ is an apocalyptic number.

265438 is a deficient number, since it is larger than the sum of its proper divisors (169586).

265438 is a wasteful number, since it uses less digits than its factorization.

265438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267.

The product of its digits is 5760, while the sum is 28.

The square root of 265438 is about 515.2067546141. The cubic root of 265438 is about 64.2669513732.

It can be divided in two parts, 265 and 438, that added together give a triangular number (703 = T₃₇).

The spelling of 265438 in words is "two hundred sixty-five thousand, four hundred thirty-eight".