265730868 has 180 divisors, whose sum is σ = 788645088. Its totient is φ = 77837760.

The previous prime is 265730849. The next prime is 265730873. The reversal of 265730868 is 868037562.

It is a super-2 number, since 2×265730868² = 141225788416066848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1259283 + ... + 1259493.

Almost surely, 2^265730868 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 265730868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394322544).

265730868 is an abundant number, since it is smaller than the sum of its proper divisors (522914220).

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

265730868 is a wasteful number, since it uses less digits than its factorization.

265730868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 265730868 is about 16301.2535714282. The cubic root of 265730868 is about 642.9057875571.

The spelling of 265730868 in words is "two hundred sixty-five million, seven hundred thirty thousand, eight hundred sixty-eight".