28680071 has 12 divisors (see below), whose sum is σ = 34821168. Its totient is φ = 23135232.

The previous prime is 28680059. The next prime is 28680073. The reversal of 28680071 is 17008682.

It is not a de Polignac number, because 28680071 - 2⁶ = 28680007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28680073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5066 + ... + 9111.

It is an arithmetic number, because the mean of its divisors is an integer number (2901764).

Almost surely, 2^28680071 is an apocalyptic number.

28680071 is a deficient number, since it is larger than the sum of its proper divisors (6141097).

28680071 is a wasteful number, since it uses less digits than its factorization.

28680071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14218 (or 14201 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 28680071 is about 5355.3777644532. The cubic root of 28680071 is about 306.0977054250.

The spelling of 28680071 in words is "twenty-eight million, six hundred eighty thousand, seventy-one".