80229780 has 72 divisors (see below), whose sum is σ = 256183200. Its totient is φ = 20267712.

The previous prime is 80229763. The next prime is 80229781. The reversal of 80229780 is 8792208.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80229781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8310 + ... + 15149.

It is an arithmetic number, because the mean of its divisors is an integer number (3558100).

Almost surely, 2^80229780 is an apocalyptic number.

It is an amenable number.

80229780 is an abundant number, since it is smaller than the sum of its proper divisors (175953420).

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

80229780 is a wasteful number, since it uses less digits than its factorization.

80229780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23493 (or 23488 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 80229780 is about 8957.1077921392. The cubic root of 80229780 is about 431.2990820002.

The spelling of 80229780 in words is "eighty million, two hundred twenty-nine thousand, seven hundred eighty".