27643342 has 4 divisors (see below), whose sum is σ = 41465016. Its totient is φ = 13821670.

The previous prime is 27643339. The next prime is 27643349. The reversal of 27643342 is 24334672.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27643349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6910834 + ... + 6910837.

It is an arithmetic number, because the mean of its divisors is an integer number (10366254).

Almost surely, 2^27643342 is an apocalyptic number.

27643342 is a deficient number, since it is larger than the sum of its proper divisors (13821674).

27643342 is a wasteful number, since it uses less digits than its factorization.

27643342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13821673.

The product of its digits is 24192, while the sum is 31.

The square root of 27643342 is about 5257.6936008101. The cubic root of 27643342 is about 302.3640697935.

The spelling of 27643342 in words is "twenty-seven million, six hundred forty-three thousand, three hundred forty-two".