138627140 has 24 divisors (see below), whose sum is σ = 291361560. Its totient is φ = 55404288.

The previous prime is 138627121. The next prime is 138627161. The reversal of 138627140 is 41726831.

It can be written as a sum of positive squares in 4 ways, for example, as 64 + 138627076 = 8^2 + 11774^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138627097 and 138627106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31304 + ... + 35456.

It is an arithmetic number, because the mean of its divisors is an integer number (12140065).

Almost surely, 2^138627140 is an apocalyptic number.

138627140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138627140 is an abundant number, since it is smaller than the sum of its proper divisors (152734420).

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

138627140 is a wasteful number, since it uses less digits than its factorization.

138627140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5831 (or 5829 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 138627140 is about 11774.0027178526. The cubic root of 138627140 is about 517.5465538802.

The spelling of 138627140 in words is "one hundred thirty-eight million, six hundred twenty-seven thousand, one hundred forty".