138540700 has 36 divisors (see below), whose sum is σ = 301598752. Its totient is φ = 55238400.

The previous prime is 138540683. The next prime is 138540713. The reversal of 138540700 is 7045831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31645 + ... + 35755.

Almost surely, 2^138540700 is an apocalyptic number.

138540700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138540700 is an abundant number, since it is smaller than the sum of its proper divisors (163058052).

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

138540700 is a wasteful number, since it uses less digits than its factorization.

138540700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462 (or 4455 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 138540700 is about 11770.3313462281. The cubic root of 138540700 is about 517.4389606490.

The spelling of 138540700 in words is "one hundred thirty-eight million, five hundred forty thousand, seven hundred".