27976906 has 4 divisors (see below), whose sum is σ = 41965362. Its totient is φ = 13988452.

The previous prime is 27976903. The next prime is 27976913. The reversal of 27976906 is 60967972.

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

It can be written as a sum of positive squares in only one way, i.e., 21242881 + 6734025 = 4609^2 + 2595^2 .

It is not an unprimeable number, because it can be changed into a prime (27976903) 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 as a sum of consecutive naturals, namely, 6994225 + ... + 6994228.

Almost surely, 2^27976906 is an apocalyptic number.

27976906 is a deficient number, since it is larger than the sum of its proper divisors (13988456).

27976906 is a wasteful number, since it uses less digits than its factorization.

27976906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13988455.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 27976906 is about 5289.3199941013. The cubic root of 27976906 is about 303.5753897180.

It can be divided in two parts, 27976 and 906, that added together give a palindrome (28882).

The spelling of 27976906 in words is "twenty-seven million, nine hundred seventy-six thousand, nine hundred six".