80280560 has 20 divisors (see below), whose sum is σ = 186652488. Its totient is φ = 32112192.

The previous prime is 80280523. The next prime is 80280589. The reversal of 80280560 is 6508208.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501674 + ... + 501833.

Almost surely, 2^80280560 is an apocalyptic number.

80280560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80280560 is an abundant number, since it is smaller than the sum of its proper divisors (106371928).

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

80280560 is a wasteful number, since it uses less digits than its factorization.

80280560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003520 (or 1003514 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 80280560 is about 8959.9419640978. The cubic root of 80280560 is about 431.3900571482.

Adding to 80280560 its reverse (6508208), we get a palindrome (86788768).

The spelling of 80280560 in words is "eighty million, two hundred eighty thousand, five hundred sixty".