80047128 has 128 divisors (see below), whose sum is σ = 237841920. Its totient is φ = 21980160.

The previous prime is 80047103. The next prime is 80047139. The reversal of 80047128 is 82174008.

It is a junction number, because it is equal to n+sod(n) for n = 80047095 and 80047104.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 748051 + ... + 748157.

It is an arithmetic number, because the mean of its divisors is an integer number (1858140).

Almost surely, 2^80047128 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 80047128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118920960).

80047128 is an abundant number, since it is smaller than the sum of its proper divisors (157794792).

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

80047128 is a wasteful number, since it uses less digits than its factorization.

80047128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 80047128 is about 8946.9060574033. The cubic root of 80047128 is about 430.9715332286.

The spelling of 80047128 in words is "eighty million, forty-seven thousand, one hundred twenty-eight".