138462860 has 24 divisors (see below), whose sum is σ = 291500160. Its totient is φ = 55246464.

The previous prime is 138462859. The next prime is 138462887. The reversal of 138462860 is 68264831.

It is a happy number.

138462860 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 7 ways as a sum of consecutive naturals, for example, 284 + ... + 16643.

It is an arithmetic number, because the mean of its divisors is an integer number (12145840).

Almost surely, 2^138462860 is an apocalyptic number.

138462860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138462860 is an abundant number, since it is smaller than the sum of its proper divisors (153037300).

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

138462860 is a wasteful number, since it uses less digits than its factorization.

138462860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17345 (or 17343 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 138462860 is about 11767.0242627437. The cubic root of 138462860 is about 517.3420336703.

The spelling of 138462860 in words is "one hundred thirty-eight million, four hundred sixty-two thousand, eight hundred sixty".