80513280 has 216 divisors, whose sum is σ = 289369080. Its totient is φ = 20643840.

The previous prime is 80513273. The next prime is 80513281. The reversal of 80513280 is 8231508.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16257024 + 64256256 = 4032^2 + 8016^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80513281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333960 + ... + 334200.

Almost surely, 2^80513280 is an apocalyptic number.

80513280 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 80513280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144684540).

80513280 is an abundant number, since it is smaller than the sum of its proper divisors (208855800).

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

80513280 is a wasteful number, since it uses less digits than its factorization.

80513280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 80513280 is about 8972.9192574100. The cubic root of 80513280 is about 431.8064977011.

Adding to 80513280 its reverse (8231508), we get a palindrome (88744788).

The spelling of 80513280 in words is "eighty million, five hundred thirteen thousand, two hundred eighty".