80993328 has 160 divisors (see below), whose sum is σ = 239984640. Its totient is φ = 23362560.

The previous prime is 80993303. The next prime is 80993347. The reversal of 80993328 is 82339908.

It is a self number, because there is not a number n which added to its sum of digits gives 80993328.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1025193 + ... + 1025271.

It is an arithmetic number, because the mean of its divisors is an integer number (1499904).

Almost surely, 2^80993328 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 80993328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119992320).

80993328 is an abundant number, since it is smaller than the sum of its proper divisors (158991312).

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

80993328 is a wasteful number, since it uses less digits than its factorization.

80993328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 80993328 is about 8999.6293257000. The cubic root of 80993328 is about 432.6629909029.

The spelling of 80993328 in words is "eighty million, nine hundred ninety-three thousand, three hundred twenty-eight".