27842739 has 8 divisors (see below), whose sum is σ = 37370112. Its totient is φ = 18438600.

The previous prime is 27842729. The next prime is 27842777. The reversal of 27842739 is 93724872.

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

It is not a de Polignac number, because 27842739 - 2⁴ = 27842723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27842739.

It is not an unprimeable number, because it can be changed into a prime (27842729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30279 + ... + 31184.

It is an arithmetic number, because the mean of its divisors is an integer number (4671264).

Almost surely, 2^27842739 is an apocalyptic number.

27842739 is a deficient number, since it is larger than the sum of its proper divisors (9527373).

27842739 is a wasteful number, since it uses less digits than its factorization.

27842739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61617.

The product of its digits is 169344, while the sum is 42.

The square root of 27842739 is about 5276.6219307432. The cubic root of 27842739 is about 303.0893330904.

The spelling of 27842739 in words is "twenty-seven million, eight hundred forty-two thousand, seven hundred thirty-nine".