27061638 has 8 divisors (see below), whose sum is σ = 54123288. Its totient is φ = 9020544.

The previous prime is 27061621. The next prime is 27061651. The reversal of 27061638 is 83616072.

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

27061638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 27061599 and 27061608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255131 + ... + 2255142.

It is an arithmetic number, because the mean of its divisors is an integer number (6765411).

Almost surely, 2^27061638 is an apocalyptic number.

27061638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27061638 is a wasteful number, since it uses less digits than its factorization.

27061638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510278.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 27061638 is about 5202.0801608587. The cubic root of 27061638 is about 300.2281153895.

The spelling of 27061638 in words is "twenty-seven million, sixty-one thousand, six hundred thirty-eight".