270138 has 16 divisors (see below), whose sum is σ = 589536. Its totient is φ = 81840.

The previous prime is 270133. The next prime is 270143. The reversal of 270138 is 831072.

It is an interprime number because it is at equal distance from previous prime (270133) and next prime (270143).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 270138.

It is not an unprimeable number, because it can be changed into a prime (270131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1981 + ... + 2112.

It is an arithmetic number, because the mean of its divisors is an integer number (36846).

2²⁷⁰¹³⁸ is an apocalyptic number.

270138 is an abundant number, since it is smaller than the sum of its proper divisors (319398).

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

270138 is a wasteful number, since it uses less digits than its factorization.

270138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 270138 is about 519.7480158692. The cubic root of 270138 is about 64.6440503805.

The spelling of 270138 in words is "two hundred seventy thousand, one hundred thirty-eight".