265728965 has 16 divisors (see below), whose sum is σ = 336165120. Its totient is φ = 201090240.

The previous prime is 265728961. The next prime is 265728971. The reversal of 265728965 is 569827562.

It is not a de Polignac number, because 265728965 - 2² = 265728961 is a prime.

It is a super-2 number, since 2×265728965² = 141223765679942450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265728961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76292 + ... + 79698.

It is an arithmetic number, because the mean of its divisors is an integer number (21010320).

Almost surely, 2^265728965 is an apocalyptic number.

It is an amenable number.

265728965 is a deficient number, since it is larger than the sum of its proper divisors (70436155).

265728965 is a wasteful number, since it uses less digits than its factorization.

265728965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252.

The product of its digits is 1814400, while the sum is 50.

The square root of 265728965 is about 16301.1952015795. The cubic root of 265728965 is about 642.9042528556.

The spelling of 265728965 in words is "two hundred sixty-five million, seven hundred twenty-eight thousand, nine hundred sixty-five".