84808080 has 320 divisors, whose sum is σ = 342835200. Its totient is φ = 18869760.

The previous prime is 84808079. The next prime is 84808091. The reversal of 84808080 is 8080848.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1073481 + ... + 1073559.

It is an arithmetic number, because the mean of its divisors is an integer number (1071360).

Almost surely, 2^84808080 is an apocalyptic number.

84808080 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 84808080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171417600).

84808080 is an abundant number, since it is smaller than the sum of its proper divisors (258027120).

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

84808080 is a wasteful number, since it uses less digits than its factorization.

84808080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 84808080 is about 9209.1302520922. The cubic root of 84808080 is about 439.3518003745.

The spelling of 84808080 in words is "eighty-four million, eight hundred eight thousand, eighty".