865152 has 48 divisors (see below), whose sum is σ = 2492880. Its totient is φ = 288000.

The previous prime is 865121. The next prime is 865153. The reversal of 865152 is 251568.

865152 is a `hidden beast` number, since 8 + 651 + 5 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865153) by changing a digit.

865152 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 777 + ... + 1527.

It is an arithmetic number, because the mean of its divisors is an integer number (51935).

2⁸⁶⁵¹⁵² 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 865152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246440).

865152 is an abundant number, since it is smaller than the sum of its proper divisors (1627728).

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

865152 is a wasteful number, since it uses less digits than its factorization.

865152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 756 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 865152 is about 930.1354740037. The cubic root of 865152 is about 95.2863750131.

The spelling of 865152 in words is "eight hundred sixty-five thousand, one hundred fifty-two".