27381994 has 4 divisors (see below), whose sum is σ = 41072994. Its totient is φ = 13690996.

The previous prime is 27381967. The next prime is 27381997. The reversal of 27381994 is 49918372.

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., 16916769 + 10465225 = 4113^2 + 3235^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27381994.

It is not an unprimeable number, because it can be changed into a prime (27381997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6845497 + ... + 6845500.

Almost surely, 2^27381994 is an apocalyptic number.

27381994 is a deficient number, since it is larger than the sum of its proper divisors (13691000).

27381994 is a wasteful number, since it uses less digits than its factorization.

27381994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13690999.

The product of its digits is 108864, while the sum is 43.

The square root of 27381994 is about 5232.7807139226. The cubic root of 27381994 is about 301.4081724187.

The spelling of 27381994 in words is "twenty-seven million, three hundred eighty-one thousand, nine hundred ninety-four".