265388 has 6 divisors (see below), whose sum is σ = 464436. Its totient is φ = 132692.

The previous prime is 265381. The next prime is 265399. The reversal of 265388 is 883562.

It is a d-powerful number, because it can be written as 2¹⁵ + 6⁶ + 3¹¹ + 5⁴ + 8⁴ + 8⁴ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 265388.

It is not an unprimeable number, because it can be changed into a prime (265381) by changing a digit.

265388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33170 + ... + 33177.

It is an arithmetic number, because the mean of its divisors is an integer number (77406).

2²⁶⁵³⁸⁸ is an apocalyptic number.

It is an amenable number.

265388 is a deficient number, since it is larger than the sum of its proper divisors (199048).

265388 is a wasteful number, since it uses less digits than its factorization.

265388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66351 (or 66349 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 265388 is about 515.1582281203. The cubic root of 265388 is about 64.2629158428.

Subtracting from 265388 its sum of digits (32), we obtain a triangular number (265356 = T₇₂₈).

The spelling of 265388 in words is "two hundred sixty-five thousand, three hundred eighty-eight".