330138 has 12 divisors (see below), whose sum is σ = 715338. Its totient is φ = 110040.

The previous prime is 330133. The next prime is 330139. The reversal of 330138 is 831033.

It can be written as a sum of positive squares in only one way, i.e., 321489 + 8649 = 567^2 + 93^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 18341 = 330138 / (3 + 3 + 0 + 1 + 3 + 8).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 330138.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 330138.

It is not an unprimeable number, because it can be changed into a prime (330131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9153 + ... + 9188.

2³³⁰¹³⁸ is an apocalyptic number.

330138 is an abundant number, since it is smaller than the sum of its proper divisors (385200).

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

330138 is a wasteful number, since it uses less digits than its factorization.

330138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18349 (or 18346 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 330138 is about 574.5763656817. The cubic root of 330138 is about 69.1138636689.

The spelling of 330138 in words is "three hundred thirty thousand, one hundred thirty-eight".