80791128 has 128 divisors (see below), whose sum is σ = 251712000. Its totient is φ = 23794560.

The previous prime is 80791103. The next prime is 80791141. The reversal of 80791128 is 82119708.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 80791092 and 80791101.

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, 87453 + ... + 88371.

It is an arithmetic number, because the mean of its divisors is an integer number (1966500).

Almost surely, 2^80791128 is an apocalyptic number.

80791128 is a gapful number since it is divisible by the number (88) 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 80791128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125856000).

80791128 is an abundant number, since it is smaller than the sum of its proper divisors (170920872).

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

80791128 is a wasteful number, since it uses less digits than its factorization.

80791128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 80791128 is about 8988.3885096273. The cubic root of 80791128 is about 432.3026428686.

The spelling of 80791128 in words is "eighty million, seven hundred ninety-one thousand, one hundred twenty-eight".