80163820 has 48 divisors (see below), whose sum is σ = 184278528. Its totient is φ = 29050560.

The previous prime is 80163803. The next prime is 80163877. The reversal of 80163820 is 2836108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101467 + ... + 102253.

It is an arithmetic number, because the mean of its divisors is an integer number (3839136).

Almost surely, 2^80163820 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 80163820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92139264).

80163820 is an abundant number, since it is smaller than the sum of its proper divisors (104114708).

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

80163820 is a wasteful number, since it uses less digits than its factorization.

80163820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 80163820 is about 8953.4250429654. The cubic root of 80163820 is about 431.1808537180.

Adding to 80163820 its reverse (2836108), we get a palindrome (82999928).

The spelling of 80163820 in words is "eighty million, one hundred sixty-three thousand, eight hundred twenty".