80801988 has 24 divisors (see below), whose sum is σ = 192923808. Its totient is φ = 26307456.

The previous prime is 80801971. The next prime is 80801989. The reversal of 80801988 is 88910808.

It is a happy number.

It is a super-5 number, since 5×80801988⁵ (a number of 41 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (80801989) 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 7 ways as a sum of consecutive naturals, for example, 77781 + ... + 78812.

It is an arithmetic number, because the mean of its divisors is an integer number (8038492).

Almost surely, 2^80801988 is an apocalyptic number.

It is an amenable number.

80801988 is an abundant number, since it is smaller than the sum of its proper divisors (112121820).

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

80801988 is a wasteful number, since it uses less digits than its factorization.

80801988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156643 (or 156641 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 42.

The square root of 80801988 is about 8988.9926020662. The cubic root of 80801988 is about 432.3220121421.

The spelling of 80801988 in words is "eighty million, eight hundred one thousand, nine hundred eighty-eight".