265728026 has 8 divisors (see below), whose sum is σ = 399110004. Its totient is φ = 132691360.

The previous prime is 265728013. The next prime is 265728143. The reversal of 265728026 is 620827562.

It can be written as a sum of positive squares in 2 ways, for example, as 260661025 + 5067001 = 16145^2 + 2251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×265728026² = 141222767603713352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84395 + ... + 87486.

Almost surely, 2^265728026 is an apocalyptic number.

265728026 is a deficient number, since it is larger than the sum of its proper divisors (133381978).

265728026 is a wasteful number, since it uses less digits than its factorization.

265728026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172656.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 265728026 is about 16301.1663999850. The cubic root of 265728026 is about 642.9034955830.

The spelling of 265728026 in words is "two hundred sixty-five million, seven hundred twenty-eight thousand, twenty-six".