80120080 has 20 divisors (see below), whose sum is σ = 186279372. Its totient is φ = 32048000.

The previous prime is 80120071. The next prime is 80120111. The reversal of 80120080 is 8002108.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18905104 + 61214976 = 4348^2 + 7824^2 .

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

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, 500671 + ... + 500830.

Almost surely, 2^80120080 is an apocalyptic number.

80120080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80120080 is an abundant number, since it is smaller than the sum of its proper divisors (106159292).

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

80120080 is a wasteful number, since it uses less digits than its factorization.

80120080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001514 (or 1001508 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 80120080 is about 8950.9820690246. The cubic root of 80120080 is about 431.1024173288.

Adding to 80120080 its reverse (8002108), we get a palindrome (88122188).

The spelling of 80120080 in words is "eighty million, one hundred twenty thousand, eighty".