27680431 has 8 divisors (see below), whose sum is σ = 29107584. Its totient is φ = 26271960.

The previous prime is 27680423. The next prime is 27680449. The reversal of 27680431 is 13408672.

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 27680431 - 2³ = 27680423 is a prime.

It is a super-2 number, since 2×27680431² = 1532412520691522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27680393 and 27680402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27680231) 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, 1581 + ... + 7606.

It is an arithmetic number, because the mean of its divisors is an integer number (3638448).

Almost surely, 2^27680431 is an apocalyptic number.

27680431 is a deficient number, since it is larger than the sum of its proper divisors (1427153).

27680431 is a wasteful number, since it uses less digits than its factorization.

27680431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9341.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 27680431 is about 5261.2195354309. The cubic root of 27680431 is about 302.4992363890.

The spelling of 27680431 in words is "twenty-seven million, six hundred eighty thousand, four hundred thirty-one".