265838464 has 32 divisors (see below), whose sum is σ = 534869640. Its totient is φ = 131596800.

The previous prime is 265838453. The next prime is 265838471. The reversal of 265838464 is 464838562.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2647 + ... + 23209.

Almost surely, 2^265838464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265838464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267434820).

265838464 is an abundant number, since it is smaller than the sum of its proper divisors (269031176).

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

265838464 is a wasteful number, since it uses less digits than its factorization.

265838464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20678 (or 20666 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 46.

The square root of 265838464 is about 16304.5534744132. The cubic root of 265838464 is about 642.9925479667.

The spelling of 265838464 in words is "two hundred sixty-five million, eight hundred thirty-eight thousand, four hundred sixty-four".