865424538 has 48 divisors (see below), whose sum is σ = 2074393152. Its totient is φ = 258552000.

The previous prime is 865424509. The next prime is 865424603. The reversal of 865424538 is 835424568.

865424538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 865424493 and 865424502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16723 + ... + 44838.

It is an arithmetic number, because the mean of its divisors is an integer number (43216524).

Almost surely, 2^865424538 is an apocalyptic number.

865424538 is an abundant number, since it is smaller than the sum of its proper divisors (1208968614).

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

865424538 is a wasteful number, since it uses less digits than its factorization.

865424538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61651 (or 61648 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 865424538 is about 29418.0988168848. The cubic root of 865424538 is about 952.9637958710.

The spelling of 865424538 in words is "eight hundred sixty-five million, four hundred twenty-four thousand, five hundred thirty-eight".