138602860 has 48 divisors (see below), whose sum is σ = 327785472. Its totient is φ = 48772800.

The previous prime is 138602839. The next prime is 138602873. The reversal of 138602860 is 68206831.

138602860 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3342 + ... + 16981.

It is an arithmetic number, because the mean of its divisors is an integer number (6828864).

Almost surely, 2^138602860 is an apocalyptic number.

138602860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138602860 is an abundant number, since it is smaller than the sum of its proper divisors (189182612).

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

138602860 is a wasteful number, since it uses less digits than its factorization.

138602860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20374 (or 20372 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 138602860 is about 11772.9715874965. The cubic root of 138602860 is about 517.5163366995.

The spelling of 138602860 in words is "one hundred thirty-eight million, six hundred two thousand, eight hundred sixty".