864248 has 64 divisors (see below), whose sum is σ = 2142720. Its totient is φ = 316800.

The previous prime is 864223. The next prime is 864251. The reversal of 864248 is 842468.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864248.

It is an unprimeable number.

864248 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14138 + ... + 14198.

It is an arithmetic number, because the mean of its divisors is an integer number (33480).

2⁸⁶⁴²⁴⁸ is an apocalyptic number.

864248 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071360).

864248 is an abundant number, since it is smaller than the sum of its proper divisors (1278472).

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

864248 is a wasteful number, since it uses less digits than its factorization.

864248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 104 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The square root of 864248 is about 929.6493962780. The cubic root of 864248 is about 95.2531751042.

It can be divided in two parts, 86 and 4248, that added together give a palindrome (4334).

The spelling of 864248 in words is "eight hundred sixty-four thousand, two hundred forty-eight".