861238 has 16 divisors (see below), whose sum is σ = 1488384. Its totient is φ = 366120.

The previous prime is 861221. The next prime is 861239. The reversal of 861238 is 832168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861239) by changing a digit.

861238 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 7 ways as a sum of consecutive naturals, for example, 3043 + ... + 3313.

It is an arithmetic number, because the mean of its divisors is an integer number (93024).

2⁸⁶¹²³⁸ is an apocalyptic number.

861238 is a deficient number, since it is larger than the sum of its proper divisors (627146).

861238 is a wasteful number, since it uses less digits than its factorization.

861238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507.

The product of its digits is 2304, while the sum is 28.

The square root of 861238 is about 928.0290943715. The cubic root of 861238 is about 95.1424639982.

The spelling of 861238 in words is "eight hundred sixty-one thousand, two hundred thirty-eight".