80771280 has 80 divisors (see below), whose sum is σ = 263584320. Its totient is φ = 20404224.

The previous prime is 80771263. The next prime is 80771281. The reversal of 80771280 is 8217708.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80771281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4297 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (3294804).

Almost surely, 2^80771280 is an apocalyptic number.

80771280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80771280 is an abundant number, since it is smaller than the sum of its proper divisors (182813040).

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

80771280 is a wasteful number, since it uses less digits than its factorization.

80771280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17748 (or 17742 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 80771280 is about 8987.2843506812. The cubic root of 80771280 is about 432.2672386280.

Adding to 80771280 its reverse (8217708), we get a palindrome (88988988).

The spelling of 80771280 in words is "eighty million, seven hundred seventy-one thousand, two hundred eighty".