138340746 has 24 divisors (see below), whose sum is σ = 300100320. Its totient is φ = 46057896.

The previous prime is 138340739. The next prime is 138340801. The reversal of 138340746 is 647043831.

138340746 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 138340746.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12361 + ... + 20723.

It is an arithmetic number, because the mean of its divisors is an integer number (12504180).

Almost surely, 2^138340746 is an apocalyptic number.

138340746 is an abundant number, since it is smaller than the sum of its proper divisors (161759574).

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

138340746 is a wasteful number, since it uses less digits than its factorization.

138340746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9290 (or 9287 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 138340746 is about 11761.8342957211. The cubic root of 138340746 is about 517.1899031375.

The spelling of 138340746 in words is "one hundred thirty-eight million, three hundred forty thousand, seven hundred forty-six".