27640142 has 8 divisors (see below), whose sum is σ = 42424536. Its totient is φ = 13498632.

The previous prime is 27640141. The next prime is 27640157. The reversal of 27640142 is 24104672.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27640141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160613 + ... + 160784.

It is an arithmetic number, because the mean of its divisors is an integer number (5303067).

Almost surely, 2^27640142 is an apocalyptic number.

27640142 is a deficient number, since it is larger than the sum of its proper divisors (14784394).

27640142 is a wasteful number, since it uses less digits than its factorization.

27640142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321442.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 27640142 is about 5257.3892760571. The cubic root of 27640142 is about 302.3524020971.

The spelling of 27640142 in words is "twenty-seven million, six hundred forty thousand, one hundred forty-two".