80905344 has 128 divisors (see below), whose sum is σ = 243902400. Its totient is φ = 23556096.

The previous prime is 80905333. The next prime is 80905351. The reversal of 80905344 is 44350908.

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

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, 94422 + ... + 95274.

Almost surely, 2^80905344 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 80905344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121951200).

80905344 is an abundant number, since it is smaller than the sum of its proper divisors (162997056).

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

80905344 is a wasteful number, since it uses less digits than its factorization.

80905344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 80905344 is about 8994.7397961253. The cubic root of 80905344 is about 432.5062651815.

The spelling of 80905344 in words is "eighty million, nine hundred five thousand, three hundred forty-four".