138692 has 6 divisors (see below), whose sum is σ = 242718. Its totient is φ = 69344.

The previous prime is 138683. The next prime is 138727. The reversal of 138692 is 296831.

It can be written as a sum of positive squares in only one way, i.e., 87616 + 51076 = 296^2 + 226^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17333 + ... + 17340.

It is an arithmetic number, because the mean of its divisors is an integer number (40453).

2¹³⁸⁶⁹² is an apocalyptic number.

It is an amenable number.

138692 is a deficient number, since it is larger than the sum of its proper divisors (104026).

138692 is a wasteful number, since it uses less digits than its factorization.

138692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34677 (or 34675 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 138692 is about 372.4137484036. The cubic root of 138692 is about 51.7627256778.

The spelling of 138692 in words is "one hundred thirty-eight thousand, six hundred ninety-two".