27957938 has 4 divisors (see below), whose sum is σ = 41936910. Its totient is φ = 13978968.

The previous prime is 27957929. The next prime is 27957959. The reversal of 27957938 is 83975972.

It is a happy number.

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., 19035769 + 8922169 = 4363^2 + 2987^2 .

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 as a sum of consecutive naturals, namely, 6989483 + ... + 6989486.

Almost surely, 2^27957938 is an apocalyptic number.

27957938 is a deficient number, since it is larger than the sum of its proper divisors (13978972).

27957938 is a wasteful number, since it uses less digits than its factorization.

27957938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13978971.

The product of its digits is 952560, while the sum is 50.

The square root of 27957938 is about 5287.5266429589. The cubic root of 27957938 is about 303.5067674072.

The spelling of 27957938 in words is "twenty-seven million, nine hundred fifty-seven thousand, nine hundred thirty-eight".