80743040 has 128 divisors (see below), whose sum is σ = 224726400. Its totient is φ = 27168768.

The previous prime is 80743031. The next prime is 80743057. The reversal of 80743040 is 4034708.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300026 + ... + 300294.

It is an arithmetic number, because the mean of its divisors is an integer number (1755675).

Almost surely, 2^80743040 is an apocalyptic number.

80743040 is a gapful number since it is divisible by the number (80) 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 80743040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112363200).

80743040 is an abundant number, since it is smaller than the sum of its proper divisors (143983360).

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

80743040 is a wasteful number, since it uses less digits than its factorization.

80743040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 80743040 is about 8985.7131047013. The cubic root of 80743040 is about 432.2168550025.

Adding to 80743040 its reverse (4034708), we get a palindrome (84777748).

The spelling of 80743040 in words is "eighty million, seven hundred forty-three thousand, forty".