27881044 has 12 divisors (see below), whose sum is σ = 48869044. Its totient is φ = 13918464.

The previous prime is 27881039. The next prime is 27881047. The reversal of 27881044 is 44018872.

It can be written as a sum of positive squares in 2 ways, for example, as 11478544 + 16402500 = 3388^2 + 4050^2 .

It is a super-2 number, since 2×27881044² = 1554705229059872, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27881047) 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, 2487 + ... + 7870.

Almost surely, 2^27881044 is an apocalyptic number.

It is an amenable number.

27881044 is a deficient number, since it is larger than the sum of its proper divisors (20988000).

27881044 is a wasteful number, since it uses less digits than its factorization.

27881044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11034 (or 11032 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 27881044 is about 5280.2503728517. The cubic root of 27881044 is about 303.2282623919.

The spelling of 27881044 in words is "twenty-seven million, eight hundred eighty-one thousand, forty-four".