80491824 has 120 divisors (see below), whose sum is σ = 263078400. Its totient is φ = 22495104.

The previous prime is 80491819. The next prime is 80491837. The reversal of 80491824 is 42819408.

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 46527 + ... + 48225.

It is an arithmetic number, because the mean of its divisors is an integer number (2192320).

Almost surely, 2^80491824 is an apocalyptic number.

80491824 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80491824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131539200).

80491824 is an abundant number, since it is smaller than the sum of its proper divisors (182586576).

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

80491824 is a wasteful number, since it uses less digits than its factorization.

80491824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1758 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 80491824 is about 8971.7235802269. The cubic root of 80491824 is about 431.7681368935.

The spelling of 80491824 in words is "eighty million, four hundred ninety-one thousand, eight hundred twenty-four".