138834 has 20 divisors (see below), whose sum is σ = 311454. Its totient is φ = 46224.

The previous prime is 138829. The next prime is 138841. The reversal of 138834 is 438831.

It can be written as a sum of positive squares in only one way, i.e., 88209 + 50625 = 297^2 + 225^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 138798 and 138807.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 267 + ... + 590.

2¹³⁸⁸³⁴ is an apocalyptic number.

138834 is an abundant number, since it is smaller than the sum of its proper divisors (172620).

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

138834 is an equidigital number, since it uses as much as digits as its factorization.

138834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871 (or 862 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 138834 is about 372.6043478007. The cubic root of 138834 is about 51.7803854321.

The spelling of 138834 in words is "one hundred thirty-eight thousand, eight hundred thirty-four".