80272780 has 72 divisors (see below), whose sum is σ = 198280656. Its totient is φ = 27216000.

The previous prime is 80272727. The next prime is 80272781. The reversal of 80272780 is 8727208.

It is not an unprimeable number, because it can be changed into a prime (80272781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98575 + ... + 99385.

It is an arithmetic number, because the mean of its divisors is an integer number (2753898).

Almost surely, 2^80272780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80272780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99140328).

80272780 is an abundant number, since it is smaller than the sum of its proper divisors (118007876).

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

80272780 is a wasteful number, since it uses less digits than its factorization.

80272780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 80272780 is about 8959.5077989809. The cubic root of 80272780 is about 431.3761213416.

Adding to 80272780 its reverse (8727208), we get a palindrome (88999988).

The spelling of 80272780 in words is "eighty million, two hundred seventy-two thousand, seven hundred eighty".