865157248 has 64 divisors (see below), whose sum is σ = 1856685600. Its totient is φ = 400232448.

The previous prime is 865157243. The next prime is 865157281. The reversal of 865157248 is 842751568.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 865157198 and 865157207.

It is not an unprimeable number, because it can be changed into a prime (865157243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100440 + ... + 108712.

Almost surely, 2^865157248 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 865157248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928342800).

865157248 is an abundant number, since it is smaller than the sum of its proper divisors (991528352).

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

865157248 is a wasteful number, since it uses less digits than its factorization.

865157248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8349 (or 8337 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 865157248 is about 29413.5555144223. Note that the first 4 decimals coincide. The cubic root of 865157248 is about 952.8656768131.

The spelling of 865157248 in words is "eight hundred sixty-five million, one hundred fifty-seven thousand, two hundred forty-eight".