865129330 has 32 divisors (see below), whose sum is σ = 1680256368. Its totient is φ = 318816000.

The previous prime is 865129297. The next prime is 865129333. The reversal of 865129330 is 33921568.

865129330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 126540001 + 738589329 = 11249^2 + 27177^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 865129330.

It is not an unprimeable number, because it can be changed into a prime (865129333) 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, 64180 + ... + 76480.

Almost surely, 2^865129330 is an apocalyptic number.

865129330 is a deficient number, since it is larger than the sum of its proper divisors (815127038).

865129330 is a wasteful number, since it uses less digits than its factorization.

865129330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12862.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 865129330 is about 29413.0809334894. The cubic root of 865129330 is about 952.8554272736.

The spelling of 865129330 in words is "eight hundred sixty-five million, one hundred twenty-nine thousand, three hundred thirty".