138590 has 8 divisors (see below), whose sum is σ = 249480. Its totient is φ = 55432.

The previous prime is 138587. The next prime is 138599. The reversal of 138590 is 95831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6920 + ... + 6939.

It is an arithmetic number, because the mean of its divisors is an integer number (31185).

2¹³⁸⁵⁹⁰ is an apocalyptic number.

138590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138590 is a deficient number, since it is larger than the sum of its proper divisors (110890).

138590 is a wasteful number, since it uses less digits than its factorization.

138590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13866.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 138590 is about 372.2767787547. The cubic root of 138590 is about 51.7500330618.

The spelling of 138590 in words is "one hundred thirty-eight thousand, five hundred ninety".