873138 has 16 divisors (see below), whose sum is σ = 1995840. Its totient is φ = 249456.

The previous prime is 873133. The next prime is 873139. The reversal of 873138 is 831378.

873138 = T₂₀₂ + T₂₀₃ + ... + T₂₃₇.

873138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873133) by changing a digit.

873138 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, 10353 + ... + 10436.

It is an arithmetic number, because the mean of its divisors is an integer number (124740).

2⁸⁷³¹³⁸ is an apocalyptic number.

873138 is an abundant number, since it is smaller than the sum of its proper divisors (1122702).

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

873138 is a wasteful number, since it uses less digits than its factorization.

873138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20801.

The product of its digits is 4032, while the sum is 30.

The square root of 873138 is about 934.4185357751. The cubic root of 873138 is about 95.5786656641.

The spelling of 873138 in words is "eight hundred seventy-three thousand, one hundred thirty-eight".