27977930 has 8 divisors (see below), whose sum is σ = 50360292. Its totient is φ = 11191168.

The previous prime is 27977923. The next prime is 27977981. The reversal of 27977930 is 3977972.

It can be written as a sum of positive squares in 2 ways, for example, as 25633969 + 2343961 = 5063^2 + 1531^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 1398887 + ... + 1398906.

Almost surely, 2^27977930 is an apocalyptic number.

27977930 is a deficient number, since it is larger than the sum of its proper divisors (22382362).

27977930 is a wasteful number, since it uses less digits than its factorization.

27977930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797800.

The product of its (nonzero) digits is 166698, while the sum is 44.

The square root of 27977930 is about 5289.4167920481. The cubic root of 27977930 is about 303.5790934562.

The spelling of 27977930 in words is "twenty-seven million, nine hundred seventy-seven thousand, nine hundred thirty".