27748130 has 16 divisors (see below), whose sum is σ = 50406840. Its totient is φ = 10996992.

The previous prime is 27748129. The next prime is 27748141. The reversal of 27748130 is 3184772.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16785409 + 10962721 = 4097^2 + 3311^2 .

It is a Curzon 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 in 7 ways as a sum of consecutive naturals, for example, 11639 + ... + 13818.

Almost surely, 2^27748130 is an apocalyptic number.

27748130 is a deficient number, since it is larger than the sum of its proper divisors (22658710).

27748130 is a wasteful number, since it uses less digits than its factorization.

27748130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25573.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 27748130 is about 5267.6493808909. The cubic root of 27748130 is about 302.7456466073.

The spelling of 27748130 in words is "twenty-seven million, seven hundred forty-eight thousand, one hundred thirty".