27680513 has 16 divisors (see below), whose sum is σ = 32307840. Its totient is φ = 23227776.

The previous prime is 27680503. The next prime is 27680533. The reversal of 27680513 is 31508672.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27680513 - 2⁶ = 27680449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27680513.

It is not an unprimeable number, because it can be changed into a prime (27680503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97670 + ... + 97952.

It is an arithmetic number, because the mean of its divisors is an integer number (2019240).

Almost surely, 2^27680513 is an apocalyptic number.

It is an amenable number.

27680513 is a deficient number, since it is larger than the sum of its proper divisors (4627327).

27680513 is a wasteful number, since it uses less digits than its factorization.

27680513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 27680513 is about 5261.2273282952. The cubic root of 27680513 is about 302.4995350948.

The spelling of 27680513 in words is "twenty-seven million, six hundred eighty thousand, five hundred thirteen".