265424128 has 72 divisors (see below), whose sum is σ = 569540160. Its totient is φ = 123002880.

The previous prime is 265424017. The next prime is 265424141. The reversal of 265424128 is 821424562.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 265424093 and 265424102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308563 + ... + 309421.

It is an arithmetic number, because the mean of its divisors is an integer number (7910280).

Almost surely, 2^265424128 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 265424128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284770080).

265424128 is an abundant number, since it is smaller than the sum of its proper divisors (304116032).

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

265424128 is an equidigital number, since it uses as much as digits as its factorization.

265424128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 949 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 265424128 is about 16291.8423758641. The cubic root of 265424128 is about 642.6583180641.

The spelling of 265424128 in words is "two hundred sixty-five million, four hundred twenty-four thousand, one hundred twenty-eight".