80544840 has 64 divisors (see below), whose sum is σ = 246792960. Its totient is φ = 21020160.

The previous prime is 80544799. The next prime is 80544889. The reversal of 80544840 is 4844508.

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, 1501 + ... + 12780.

It is an arithmetic number, because the mean of its divisors is an integer number (3856140).

Almost surely, 2^80544840 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 80544840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123396480).

80544840 is an abundant number, since it is smaller than the sum of its proper divisors (166248120).

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

80544840 is a wasteful number, since it uses less digits than its factorization.

80544840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14342 (or 14338 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 80544840 is about 8974.6777100908. The cubic root of 80544840 is about 431.8629108909.

The spelling of 80544840 in words is "eighty million, five hundred forty-four thousand, eight hundred forty".