138387060 has 72 divisors (see below), whose sum is σ = 479746176. Its totient is φ = 31631040.

The previous prime is 138387031. The next prime is 138387071. The reversal of 138387060 is 60783831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53656 + ... + 56175.

Almost surely, 2^138387060 is an apocalyptic number.

138387060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138387060 is an abundant number, since it is smaller than the sum of its proper divisors (341359116).

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

138387060 is a wasteful number, since it uses less digits than its factorization.

138387060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109853 (or 109848 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 138387060 is about 11763.8029565273. The cubic root of 138387060 is about 517.2476119985.

The spelling of 138387060 in words is "one hundred thirty-eight million, three hundred eighty-seven thousand, sixty".