260138 has 4 divisors (see below), whose sum is σ = 390210. Its totient is φ = 130068.

The previous prime is 260137. The next prime is 260171. The reversal of 260138 is 831062.

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., 190969 + 69169 = 437^2 + 263^2 .

It is not an unprimeable number, because it can be changed into a prime (260137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65033 + ... + 65036.

2²⁶⁰¹³⁸ is an apocalyptic number.

260138 is a deficient number, since it is larger than the sum of its proper divisors (130072).

260138 is a wasteful number, since it uses less digits than its factorization.

260138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130071.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 260138 is about 510.0372535413. The cubic root of 260138 is about 63.8363331143.

The spelling of 260138 in words is "two hundred sixty thousand, one hundred thirty-eight".