867138 has 16 divisors (see below), whose sum is σ = 1775136. Its totient is φ = 282240.

The previous prime is 867131. The next prime is 867143. The reversal of 867138 is 831768.

867138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×867138² = 1503856622088, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 867099 and 867108.

It is not an unprimeable number, because it can be changed into a prime (867131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423 + ... + 1938.

It is an arithmetic number, because the mean of its divisors is an integer number (110946).

2⁸⁶⁷¹³⁸ is an apocalyptic number.

867138 is an abundant number, since it is smaller than the sum of its proper divisors (907998).

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

867138 is a wasteful number, since it uses less digits than its factorization.

867138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409.

The product of its digits is 8064, while the sum is 33.

The square root of 867138 is about 931.2024484504. The cubic root of 867138 is about 95.3592308515.

The spelling of 867138 in words is "eight hundred sixty-seven thousand, one hundred thirty-eight".