Search a number
-
+
138298 = 269149
BaseRepresentation
bin100001110000111010
321000201011
4201300322
513411143
62544134
71114126
oct416072
9230634
10138298
11949a6
126804a
134ac44
1438586
152ae9d
hex21c3a

138298 has 4 divisors (see below), whose sum is σ = 207450. Its totient is φ = 69148.

The previous prime is 138289. The next prime is 138311. The reversal of 138298 is 892831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 124609 + 13689 = 353^2 + 117^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34573 + ... + 34576.

2138298 is an apocalyptic number.

138298 is a deficient number, since it is larger than the sum of its proper divisors (69152).

138298 is an equidigital number, since it uses as much as digits as its factorization.

138298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69151.

The product of its digits is 3456, while the sum is 31.

The square root of 138298 is about 371.8843906377. The cubic root of 138298 is about 51.7136628698.

The spelling of 138298 in words is "one hundred thirty-eight thousand, two hundred ninety-eight".

Divisors: 1 2 69149 138298