265001328 has 80 divisors (see below), whose sum is σ = 762649600. Its totient is φ = 88102080.

The previous prime is 265001309. The next prime is 265001329. The reversal of 265001328 is 823100562.

265001328 is a `hidden beast` number, since 2 + 650 + 0 + 1 + 3 + 2 + 8 = 666.

It is a super-3 number, since 3×265001328³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265001329) 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, 266913 + ... + 267903.

It is an arithmetic number, because the mean of its divisors is an integer number (9533120).

Almost surely, 2^265001328 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 265001328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381324800).

265001328 is an abundant number, since it is smaller than the sum of its proper divisors (497648272).

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

265001328 is a wasteful number, since it uses less digits than its factorization.

265001328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 265001328 is about 16278.8613852444. The cubic root of 265001328 is about 642.3169018047.

The spelling of 265001328 in words is "two hundred sixty-five million, one thousand, three hundred twenty-eight".