27740506 has 4 divisors (see below), whose sum is σ = 41610762. Its totient is φ = 13870252.

The previous prime is 27740497. The next prime is 27740519. The reversal of 27740506 is 60504772.

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., 19669225 + 8071281 = 4435^2 + 2841^2 .

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 an unprimeable number.

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 as a sum of consecutive naturals, namely, 6935125 + ... + 6935128.

Almost surely, 2^27740506 is an apocalyptic number.

27740506 is a deficient number, since it is larger than the sum of its proper divisors (13870256).

27740506 is a wasteful number, since it uses less digits than its factorization.

27740506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13870255.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 27740506 is about 5266.9256687369. The cubic root of 27740506 is about 302.7179168800.

The spelling of 27740506 in words is "twenty-seven million, seven hundred forty thousand, five hundred six".