80528866 has 8 divisors (see below), whose sum is σ = 131774544. Its totient is φ = 36604020.

The previous prime is 80528849. The next prime is 80528893. The reversal of 80528866 is 66882508.

It is a happy number.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1830180 + ... + 1830223.

It is an arithmetic number, because the mean of its divisors is an integer number (16471818).

Almost surely, 2^80528866 is an apocalyptic number.

80528866 is a deficient number, since it is larger than the sum of its proper divisors (51245678).

80528866 is a wasteful number, since it uses less digits than its factorization.

80528866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660416.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 80528866 is about 8973.7877175694. The cubic root of 80528866 is about 431.8343593650.

The spelling of 80528866 in words is "eighty million, five hundred twenty-eight thousand, eight hundred sixty-six".