80990208 has 156 divisors (see below), whose sum is σ = 253429540. Its totient is φ = 24920064.

The previous prime is 80990167. The next prime is 80990213. The reversal of 80990208 is 80209908.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 2985984 + 78004224 = 1728^2 + 8832^2 .

It is a tau number, because it is divible by the number of its divisors (156).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6230010 + ... + 6230022.

Almost surely, 2^80990208 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 80990208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126714770).

80990208 is an abundant number, since it is smaller than the sum of its proper divisors (172439332).

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

80990208 is an equidigital number, since it uses as much as digits as its factorization.

80990208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 80990208 is about 8999.4559835581. The cubic root of 80990208 is about 432.6574351948.

The spelling of 80990208 in words is "eighty million, nine hundred ninety thousand, two hundred eight".