28080771 has 8 divisors (see below), whose sum is σ = 37492560. Its totient is φ = 18694752.

The previous prime is 28080739. The next prime is 28080779. The reversal of 28080771 is 17708082.

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

It is not a de Polignac number, because 28080771 - 2⁵ = 28080739 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28080779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3736 + ... + 8373.

It is an arithmetic number, because the mean of its divisors is an integer number (4686570).

Almost surely, 2^28080771 is an apocalyptic number.

28080771 is a deficient number, since it is larger than the sum of its proper divisors (9411789).

28080771 is a wasteful number, since it uses less digits than its factorization.

28080771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12885.

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 28080771 is about 5299.1292680968. The cubic root of 28080771 is about 303.9506029792.

The spelling of 28080771 in words is "twenty-eight million, eighty thousand, seven hundred seventy-one".