80428891 has 8 divisors (see below), whose sum is σ = 82773504. Its totient is φ = 78110760.

The previous prime is 80428879. The next prime is 80428897. The reversal of 80428891 is 19882408.

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

It is a cyclic number.

It is not a de Polignac number, because 80428891 - 2¹³ = 80420699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80428897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375 + ... + 12688.

It is an arithmetic number, because the mean of its divisors is an integer number (10346688).

Almost surely, 2^80428891 is an apocalyptic number.

80428891 is a deficient number, since it is larger than the sum of its proper divisors (2344613).

80428891 is a wasteful number, since it uses less digits than its factorization.

80428891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13241.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 80428891 is about 8968.2155973192. The cubic root of 80428891 is about 431.6555807459.

The spelling of 80428891 in words is "eighty million, four hundred twenty-eight thousand, eight hundred ninety-one".