138027515 has 8 divisors (see below), whose sum is σ = 165697920. Its totient is φ = 110378752.

The previous prime is 138027511. The next prime is 138027517. The reversal of 138027515 is 515720831.

138027515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138027515 - 2² = 138027511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138027511) 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, 17291 + ... + 23979.

It is an arithmetic number, because the mean of its divisors is an integer number (20712240).

Almost surely, 2^138027515 is an apocalyptic number.

138027515 is a deficient number, since it is larger than the sum of its proper divisors (27670405).

138027515 is an equidigital number, since it uses as much as digits as its factorization.

138027515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10821.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 138027515 is about 11748.5111822733. The cubic root of 138027515 is about 516.7992678499.

The spelling of 138027515 in words is "one hundred thirty-eight million, twenty-seven thousand, five hundred fifteen".