265768320 has 128 divisors (see below), whose sum is σ = 853740000. Its totient is φ = 70320128.

The previous prime is 265768319. The next prime is 265768331. The reversal of 265768320 is 23867562.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

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, 285616 + ... + 286544.

Almost surely, 2^265768320 is an apocalyptic number.

265768320 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 265768320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426870000).

265768320 is an abundant number, since it is smaller than the sum of its proper divisors (587971680).

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

265768320 is a wasteful number, since it uses less digits than its factorization.

265768320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 265768320 is about 16302.4022769652. The cubic root of 265768320 is about 642.9359897646.

The spelling of 265768320 in words is "two hundred sixty-five million, seven hundred sixty-eight thousand, three hundred twenty".