138077488 has 20 divisors (see below), whose sum is σ = 274756720. Its totient is φ = 67172544.

The previous prime is 138077483. The next prime is 138077491. The reversal of 138077488 is 884770831.

It is not an unprimeable number, because it can be changed into a prime (138077483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116028 + ... + 117211.

It is an arithmetic number, because the mean of its divisors is an integer number (13737836).

Almost surely, 2^138077488 is an apocalyptic number.

It is an amenable number.

138077488 is a deficient number, since it is larger than the sum of its proper divisors (136679232).

138077488 is a wasteful number, since it uses less digits than its factorization.

138077488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233284 (or 233278 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 138077488 is about 11750.6377699255. The cubic root of 138077488 is about 516.8616295553.

The spelling of 138077488 in words is "one hundred thirty-eight million, seventy-seven thousand, four hundred eighty-eight".