80091828 has 144 divisors (see below), whose sum is σ = 230053824. Its totient is φ = 24261120.

The previous prime is 80091799. The next prime is 80091853. The reversal of 80091828 is 82819008.

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

It is a junction number, because it is equal to n+sod(n) for n = 80091792 and 80091801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 611323 + ... + 611453.

It is an arithmetic number, because the mean of its divisors is an integer number (1597596).

Almost surely, 2^80091828 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 80091828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115026912).

80091828 is an abundant number, since it is smaller than the sum of its proper divisors (149961996).

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

80091828 is a wasteful number, since it uses less digits than its factorization.

80091828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 80091828 is about 8949.4037790235. The cubic root of 80091828 is about 431.0517394906.

The spelling of 80091828 in words is "eighty million, ninety-one thousand, eight hundred twenty-eight".