27138650 has 144 divisors (see below), whose sum is σ = 68700960. Its totient is φ = 7862400.

The previous prime is 27138637. The next prime is 27138653. The reversal of 27138650 is 5683172.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (27138653) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 512024 + ... + 512076.

It is an arithmetic number, because the mean of its divisors is an integer number (477090).

Almost surely, 2^27138650 is an apocalyptic number.

27138650 is an abundant number, since it is smaller than the sum of its proper divisors (41562310).

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

27138650 is a wasteful number, since it uses less digits than its factorization.

27138650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 27138650 is about 5209.4769411141. The cubic root of 27138650 is about 300.5126420134.

The spelling of 27138650 in words is "twenty-seven million, one hundred thirty-eight thousand, six hundred fifty".