27631387 has 8 divisors (see below), whose sum is σ = 31762656. Its totient is φ = 23546112.

The previous prime is 27631381. The next prime is 27631423. The reversal of 27631387 is 78313672.

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

It is a cyclic number.

It is not a de Polignac number, because 27631387 - 2⁷ = 27631259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27631381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10198 + ... + 12619.

It is an arithmetic number, because the mean of its divisors is an integer number (3970332).

Almost surely, 2^27631387 is an apocalyptic number.

27631387 is a deficient number, since it is larger than the sum of its proper divisors (4131269).

27631387 is a wasteful number, since it uses less digits than its factorization.

27631387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22997.

The product of its digits is 42336, while the sum is 37.

The square root of 27631387 is about 5256.5565725102. The cubic root of 27631387 is about 302.3204754061.

The spelling of 27631387 in words is "twenty-seven million, six hundred thirty-one thousand, three hundred eighty-seven".