138285017 has 12 divisors (see below), whose sum is σ = 153895140. Its totient is φ = 123518880.

The previous prime is 138285013. The next prime is 138285023. The reversal of 138285017 is 710582831.

It can be written as a sum of positive squares in 2 ways, for example, as 16491721 + 121793296 = 4061^2 + 11036^2 .

It is not a de Polignac number, because 138285017 - 2² = 138285013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138285011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6959 + ... + 18027.

It is an arithmetic number, because the mean of its divisors is an integer number (12824595).

Almost surely, 2^138285017 is an apocalyptic number.

It is an amenable number.

138285017 is a deficient number, since it is larger than the sum of its proper divisors (15610123).

138285017 is a wasteful number, since it uses less digits than its factorization.

138285017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11144 (or 11113 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 138285017 is about 11759.4649963338. The cubic root of 138285017 is about 517.1204457817.

The spelling of 138285017 in words is "one hundred thirty-eight million, two hundred eighty-five thousand, seventeen".