80117280 has 288 divisors, whose sum is σ = 297198720. Its totient is φ = 19599360.

The previous prime is 80117269. The next prime is 80117287. The reversal of 80117280 is 8271108.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80117287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1357891 + ... + 1357949.

It is an arithmetic number, because the mean of its divisors is an integer number (1031940).

Almost surely, 2^80117280 is an apocalyptic number.

80117280 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 80117280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148599360).

80117280 is an abundant number, since it is smaller than the sum of its proper divisors (217081440).

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

80117280 is a wasteful number, since it uses less digits than its factorization.

80117280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 80117280 is about 8950.8256602394. The cubic root of 80117280 is about 431.0973952801.

Adding to 80117280 its reverse (8271108), we get a palindrome (88388388).

It can be divided in two parts, 801 and 17280, that added together give a palindrome (18081).

The spelling of 80117280 in words is "eighty million, one hundred seventeen thousand, two hundred eighty".