865040352 has 48 divisors (see below), whose sum is σ = 2477164032. Its totient is φ = 262133120.

The previous prime is 865040321. The next prime is 865040369. The reversal of 865040352 is 253040568.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408528 + ... + 410639.

It is an arithmetic number, because the mean of its divisors is an integer number (51607584).

Almost surely, 2^865040352 is an apocalyptic number.

It is an amenable number.

865040352 is an abundant number, since it is smaller than the sum of its proper divisors (1612123680).

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

865040352 is a wasteful number, since it uses less digits than its factorization.

865040352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819191 (or 819183 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 865040352 is about 29411.5683362856. The cubic root of 865040352 is about 952.8227592959.

The spelling of 865040352 in words is "eight hundred sixty-five million, forty thousand, three hundred fifty-two".