138766268 has 24 divisors (see below), whose sum is σ = 254499840. Its totient is φ = 66078320.

The previous prime is 138766259. The next prime is 138766273. The reversal of 138766268 is 862667831.

138766268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 18833 + ... + 25143.

It is an arithmetic number, because the mean of its divisors is an integer number (10604160).

Almost surely, 2^138766268 is an apocalyptic number.

It is an amenable number.

138766268 is a deficient number, since it is larger than the sum of its proper divisors (115733572).

138766268 is a wasteful number, since it uses less digits than its factorization.

138766268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6577 (or 6575 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 138766268 is about 11779.9095072925. The cubic root of 138766268 is about 517.7196348077.

The spelling of 138766268 in words is "one hundred thirty-eight million, seven hundred sixty-six thousand, two hundred sixty-eight".