864234 has 48 divisors (see below), whose sum is σ = 2258880. Its totient is φ = 233928.

The previous prime is 864223. The next prime is 864251. The reversal of 864234 is 432468.

864234 = 162² + 163² + ... + 189².

Its product of digits (4608) is a multiple of the sum of its prime factors (72).

It is a junction number, because it is equal to n+sod(n) for n = 864198 and 864207.

It is an unprimeable 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 23 ways as a sum of consecutive naturals, for example, 45477 + ... + 45495.

It is an arithmetic number, because the mean of its divisors is an integer number (47060).

2⁸⁶⁴²³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129440).

864234 is an abundant number, since it is smaller than the sum of its proper divisors (1394646).

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

864234 is a wasteful number, since it uses less digits than its factorization.

864234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 31 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 864234 is about 929.6418665271. The cubic root of 864234 is about 95.2526607643.

The spelling of 864234 in words is "eight hundred sixty-four thousand, two hundred thirty-four".