27439018 has 4 divisors (see below), whose sum is σ = 41158530. Its totient is φ = 13719508.

The previous prime is 27439007. The next prime is 27439019. The reversal of 27439018 is 81093472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19333609 + 8105409 = 4397^2 + 2847^2 .

It is not an unprimeable number, because it can be changed into a prime (27439019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6859753 + ... + 6859756.

Almost surely, 2^27439018 is an apocalyptic number.

27439018 is a deficient number, since it is larger than the sum of its proper divisors (13719512).

27439018 is a wasteful number, since it uses less digits than its factorization.

27439018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13719511.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 27439018 is about 5238.2266083093. The cubic root of 27439018 is about 301.6172585090.

The spelling of 27439018 in words is "twenty-seven million, four hundred thirty-nine thousand, eighteen".