138766896 has 30 divisors (see below), whose sum is σ = 388354980. Its totient is φ = 46255584.

The previous prime is 138766871. The next prime is 138766907. The reversal of 138766896 is 698667831.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 481686 + ... + 481973.

It is an arithmetic number, because the mean of its divisors is an integer number (12945166).

Almost surely, 2^138766896 is an apocalyptic number.

138766896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138766896 is an abundant number, since it is smaller than the sum of its proper divisors (249588084).

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

138766896 is a wasteful number, since it uses less digits than its factorization.

138766896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963673 (or 963664 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 138766896 is about 11779.9361628151. The cubic root of 138766896 is about 517.7204158031.

The spelling of 138766896 in words is "one hundred thirty-eight million, seven hundred sixty-six thousand, eight hundred ninety-six".