786138 has 8 divisors (see below), whose sum is σ = 1572288. Its totient is φ = 262044.

The previous prime is 786127. The next prime is 786151. The reversal of 786138 is 831687.

It is a sphenic number, since it is the product of 3 distinct primes.

786138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 786099 and 786108.

It is an unprimeable number.

786138 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 3 ways as a sum of consecutive naturals, for example, 65506 + ... + 65517.

It is an arithmetic number, because the mean of its divisors is an integer number (196536).

2⁷⁸⁶¹³⁸ is an apocalyptic number.

786138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

786138 is a wasteful number, since it uses less digits than its factorization.

786138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131028.

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

The square root of 786138 is about 886.6442353052. The cubic root of 786138 is about 92.2924687501.

It can be divided in two parts, 78 and 6138, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 786138 in words is "seven hundred eighty-six thousand, one hundred thirty-eight".