366138 has 12 divisors (see below), whose sum is σ = 793338. Its totient is φ = 122040.

The previous prime is 366133. The next prime is 366139. The reversal of 366138 is 831663.

It can be written as a sum of positive squares in only one way, i.e., 294849 + 71289 = 543^2 + 267^2 .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (366133) by changing a digit.

366138 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 5 ways as a sum of consecutive naturals, for example, 10153 + ... + 10188.

2³⁶⁶¹³⁸ is an apocalyptic number.

366138 is an abundant number, since it is smaller than the sum of its proper divisors (427200).

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

366138 is a wasteful number, since it uses less digits than its factorization.

366138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20349 (or 20346 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 366138 is about 605.0933812231. The cubic root of 366138 is about 71.5398900432.

The spelling of 366138 in words is "three hundred sixty-six thousand, one hundred thirty-eight".