138767750 has 32 divisors (see below), whose sum is σ = 283394592. Its totient is φ = 50460000.

The previous prime is 138767689. The next prime is 138767767. The reversal of 138767750 is 57767831.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22481 + ... + 27980.

It is an arithmetic number, because the mean of its divisors is an integer number (8856081).

Almost surely, 2^138767750 is an apocalyptic number.

138767750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138767750 is an abundant number, since it is smaller than the sum of its proper divisors (144626842).

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

138767750 is a wasteful number, since it uses less digits than its factorization.

138767750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50489 (or 50479 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 138767750 is about 11779.9724108336. The cubic root of 138767750 is about 517.7214778535.

The spelling of 138767750 in words is "one hundred thirty-eight million, seven hundred sixty-seven thousand, seven hundred fifty".