80871988 has 12 divisors (see below), whose sum is σ = 141665860. Its totient is φ = 40396032.

The previous prime is 80871983. The next prime is 80872003. The reversal of 80871988 is 88917808.

It can be written as a sum of positive squares in 2 ways, for example, as 62536464 + 18335524 = 7908^2 + 4282^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80871983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5181 + ... + 13732.

Almost surely, 2^80871988 is an apocalyptic number.

It is an amenable number.

80871988 is a deficient number, since it is larger than the sum of its proper divisors (60793872).

80871988 is a wasteful number, since it uses less digits than its factorization.

80871988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19986 (or 19984 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 49.

The square root of 80871988 is about 8992.8854101451. The cubic root of 80871988 is about 432.4468185024.

The spelling of 80871988 in words is "eighty million, eight hundred seventy-one thousand, nine hundred eighty-eight".