27749474 has 8 divisors (see below), whose sum is σ = 44072748. Its totient is φ = 13058560.

The previous prime is 27749471. The next prime is 27749483. The reversal of 27749474 is 47494772.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25050025 + 2699449 = 5005^2 + 1643^2 .

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

It is not an unprimeable number, because it can be changed into a prime (27749471) 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 3 ways as a sum of consecutive naturals, for example, 408047 + ... + 408114.

Almost surely, 2^27749474 is an apocalyptic number.

27749474 is a deficient number, since it is larger than the sum of its proper divisors (16323274).

27749474 is a wasteful number, since it uses less digits than its factorization.

27749474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816180.

The product of its digits is 395136, while the sum is 44.

The square root of 27749474 is about 5267.7769504792. The cubic root of 27749474 is about 302.7505344271.

The spelling of 27749474 in words is "twenty-seven million, seven hundred forty-nine thousand, four hundred seventy-four".