27977974 has 4 divisors (see below), whose sum is σ = 41966964. Its totient is φ = 13988986.

The previous prime is 27977923. The next prime is 27977981. The reversal of 27977974 is 47977972.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6994492 + ... + 6994495.

It is an arithmetic number, because the mean of its divisors is an integer number (10491741).

Almost surely, 2^27977974 is an apocalyptic number.

27977974 is a deficient number, since it is larger than the sum of its proper divisors (13988990).

27977974 is a wasteful number, since it uses less digits than its factorization.

27977974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13988989.

The product of its digits is 1555848, while the sum is 52.

The square root of 27977974 is about 5289.4209512951. The cubic root of 27977974 is about 303.5792525991.

The spelling of 27977974 in words is "twenty-seven million, nine hundred seventy-seven thousand, nine hundred seventy-four".