265964160 has 384 divisors, whose sum is σ = 1080008640. Its totient is φ = 55050240.

The previous prime is 265964143. The next prime is 265964161. The reversal of 265964160 is 61469562.

It is a tau number, because it is divible by the number of its divisors (384).

It is not an unprimeable number, because it can be changed into a prime (265964161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1034752 + ... + 1035008.

Almost surely, 2^265964160 is an apocalyptic number.

265964160 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 265964160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540004320).

265964160 is an abundant number, since it is smaller than the sum of its proper divisors (814044480).

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

265964160 is a wasteful number, since it uses less digits than its factorization.

265964160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 265964160 is about 16308.4076475909. The cubic root of 265964160 is about 643.0938737307.

The spelling of 265964160 in words is "two hundred sixty-five million, nine hundred sixty-four thousand, one hundred sixty".