27680429 has 8 divisors (see below), whose sum is σ = 31673088. Its totient is φ = 23697360.

The previous prime is 27680423. The next prime is 27680449. The reversal of 27680429 is 92408672.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27680429 is a prime.

It is a super-2 number, since 2×27680429² = 1532412299248082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27680392 and 27680401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27680423) 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, 5564 + ... + 9290.

It is an arithmetic number, because the mean of its divisors is an integer number (3959136).

Almost surely, 2^27680429 is an apocalyptic number.

It is an amenable number.

27680429 is a deficient number, since it is larger than the sum of its proper divisors (3992659).

27680429 is a wasteful number, since it uses less digits than its factorization.

27680429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 27680429 is about 5261.2193453609. The cubic root of 27680429 is about 302.4992291035.

The spelling of 27680429 in words is "twenty-seven million, six hundred eighty thousand, four hundred twenty-nine".