138406076 has 6 divisors (see below), whose sum is σ = 242210640. Its totient is φ = 69203036.

The previous prime is 138406063. The next prime is 138406087. The reversal of 138406076 is 670604831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17300756 + ... + 17300763.

It is an arithmetic number, because the mean of its divisors is an integer number (40368440).

Almost surely, 2^138406076 is an apocalyptic number.

It is an amenable number.

138406076 is a deficient number, since it is larger than the sum of its proper divisors (103804564).

138406076 is a wasteful number, since it uses less digits than its factorization.

138406076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34601523 (or 34601521 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 138406076 is about 11764.6111707952. The cubic root of 138406076 is about 517.2713028698.

The spelling of 138406076 in words is "one hundred thirty-eight million, four hundred six thousand, seventy-six".