27865142 has 8 divisors (see below), whose sum is σ = 44256456. Its totient is φ = 13112992.

The previous prime is 27865139. The next prime is 27865151. The reversal of 27865142 is 24156872.

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

It is a super-2 number, since 2×27865142² = 1552932277360328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409748 + ... + 409815.

It is an arithmetic number, because the mean of its divisors is an integer number (5532057).

Almost surely, 2^27865142 is an apocalyptic number.

27865142 is a deficient number, since it is larger than the sum of its proper divisors (16391314).

27865142 is a wasteful number, since it uses less digits than its factorization.

27865142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819582.

The product of its digits is 26880, while the sum is 35.

The square root of 27865142 is about 5278.7443582731. The cubic root of 27865142 is about 303.1706025132.

The spelling of 27865142 in words is "twenty-seven million, eight hundred sixty-five thousand, one hundred forty-two".