80919216 has 80 divisors (see below), whose sum is σ = 265459200. Its totient is φ = 23118912.

The previous prime is 80919203. The next prime is 80919217. The reversal of 80919216 is 61291908.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (80919217) 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 15 ways as a sum of consecutive naturals, for example, 10356 + ... + 16403.

It is an arithmetic number, because the mean of its divisors is an integer number (3318240).

Almost surely, 2^80919216 is an apocalyptic number.

It is an amenable number.

80919216 is an abundant number, since it is smaller than the sum of its proper divisors (184539984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80919216 is a wasteful number, since it uses less digits than its factorization.

80919216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26783 (or 26771 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 80919216 is about 8995.5108804336. The cubic root of 80919216 is about 432.5309828896.

The spelling of 80919216 in words is "eighty million, nine hundred nineteen thousand, two hundred sixteen".