265966480 has 80 divisors (see below), whose sum is σ = 694955520. Its totient is φ = 93924864.

The previous prime is 265966447. The next prime is 265966499. The reversal of 265966480 is 84669562.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 265966480.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18361 + ... + 29479.

It is an arithmetic number, because the mean of its divisors is an integer number (8686944).

Almost surely, 2^265966480 is an apocalyptic number.

265966480 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 265966480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347477760).

265966480 is an abundant number, since it is smaller than the sum of its proper divisors (428989040).

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

265966480 is a wasteful number, since it uses less digits than its factorization.

265966480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11168 (or 11162 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 265966480 is about 16308.4787763911. The cubic root of 265966480 is about 643.0957436236.

It can be divided in two parts, 265 and 966480, that added together give a triangular number (966745 = T₁₃₉₀).

The spelling of 265966480 in words is "two hundred sixty-five million, nine hundred sixty-six thousand, four hundred eighty".