138882140 has 24 divisors (see below), whose sum is σ = 292003152. Its totient is φ = 55486080.

The previous prime is 138882137. The next prime is 138882143. The reversal of 138882140 is 41288831.

It is an interprime number because it is at equal distance from previous prime (138882137) and next prime (138882143).

It is a self number, because there is not a number n which added to its sum of digits gives 138882140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138882143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15035 + ... + 22445.

It is an arithmetic number, because the mean of its divisors is an integer number (12166798).

Almost surely, 2^138882140 is an apocalyptic number.

138882140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138882140 is an abundant number, since it is smaller than the sum of its proper divisors (153121012).

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

138882140 is a wasteful number, since it uses less digits than its factorization.

138882140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357 (or 8355 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 138882140 is about 11784.8266851914. The cubic root of 138882140 is about 517.8636960430.

The spelling of 138882140 in words is "one hundred thirty-eight million, eight hundred eighty-two thousand, one hundred forty".