80545280 has 80 divisors (see below), whose sum is σ = 196219584. Its totient is φ = 31703040.

The previous prime is 80545277. The next prime is 80545301. The reversal of 80545280 is 8254508.

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

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186665 + ... + 187095.

Almost surely, 2^80545280 is an apocalyptic number.

80545280 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 80545280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98109792).

80545280 is an abundant number, since it is smaller than the sum of its proper divisors (115674304).

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

80545280 is an equidigital number, since it uses as much as digits as its factorization.

80545280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 80545280 is about 8974.7022234724. The cubic root of 80545280 is about 431.8636972824.

Adding to 80545280 its reverse (8254508), we get a palindrome (88799788).

The spelling of 80545280 in words is "eighty million, five hundred forty-five thousand, two hundred eighty".