80118820 has 24 divisors (see below), whose sum is σ = 177105600. Its totient is φ = 30360672.

The previous prime is 80118809. The next prime is 80118823. The reversal of 80118820 is 2881108.

It is not an unprimeable number, because it can be changed into a prime (80118823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105040 + ... + 105799.

It is an arithmetic number, because the mean of its divisors is an integer number (7379400).

Almost surely, 2^80118820 is an apocalyptic number.

It is an amenable number.

80118820 is an abundant number, since it is smaller than the sum of its proper divisors (96986780).

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

80118820 is a wasteful number, since it uses less digits than its factorization.

80118820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210867 (or 210865 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 80118820 is about 8950.9116854095. The cubic root of 80118820 is about 431.1001574214.

Adding to 80118820 its reverse (2881108), we get a palindrome (82999928).

The spelling of 80118820 in words is "eighty million, one hundred eighteen thousand, eight hundred twenty".