265238628 has 12 divisors (see below), whose sum is σ = 618890160. Its totient is φ = 88412872.

The previous prime is 265238621. The next prime is 265238639. The reversal of 265238628 is 826832562.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 265238628.

It is not an unprimeable number, because it can be changed into a prime (265238621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11051598 + ... + 11051621.

It is an arithmetic number, because the mean of its divisors is an integer number (51574180).

Almost surely, 2^265238628 is an apocalyptic number.

It is an amenable number.

265238628 is an abundant number, since it is smaller than the sum of its proper divisors (353651532).

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

265238628 is a wasteful number, since it uses less digits than its factorization.

265238628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22103226 (or 22103224 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 265238628 is about 16286.1483475989. The cubic root of 265238628 is about 642.5085691802.

The spelling of 265238628 in words is "two hundred sixty-five million, two hundred thirty-eight thousand, six hundred twenty-eight".