80788880 has 80 divisors (see below), whose sum is σ = 198737280. Its totient is φ = 30538112.

The previous prime is 80788861. The next prime is 80788889. The reversal of 80788880 is 8888708.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (80788889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973319 + ... + 973401.

It is an arithmetic number, because the mean of its divisors is an integer number (2484216).

Almost surely, 2^80788880 is an apocalyptic number.

80788880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80788880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99368640).

80788880 is an abundant number, since it is smaller than the sum of its proper divisors (117948400).

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

80788880 is an equidigital number, since it uses as much as digits as its factorization.

80788880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 47.

The square root of 80788880 is about 8988.2634585330. The cubic root of 80788880 is about 432.2986332478.

The spelling of 80788880 in words is "eighty million, seven hundred eighty-eight thousand, eight hundred eighty".