138971060 has 24 divisors (see below), whose sum is σ = 304528896. Its totient is φ = 53171360.

The previous prime is 138971059. The next prime is 138971081. The reversal of 138971060 is 60179831.

It is a self number, because there is not a number n which added to its sum of digits gives 138971060.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150596 + ... + 151515.

It is an arithmetic number, because the mean of its divisors is an integer number (12688704).

Almost surely, 2^138971060 is an apocalyptic number.

138971060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138971060 is an abundant number, since it is smaller than the sum of its proper divisors (165557836).

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

138971060 is a wasteful number, since it uses less digits than its factorization.

138971060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302143 (or 302141 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 138971060 is about 11788.5987292808. The cubic root of 138971060 is about 517.9741940902.

The spelling of 138971060 in words is "one hundred thirty-eight million, nine hundred seventy-one thousand, sixty".