80515312 has 40 divisors (see below), whose sum is σ = 166239360. Its totient is φ = 37667520.

The previous prime is 80515291. The next prime is 80515319. The reversal of 80515312 is 21351508.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80515319) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23637 + ... + 26827.

It is an arithmetic number, because the mean of its divisors is an integer number (4155984).

Almost surely, 2^80515312 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 80515312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83119680).

80515312 is an abundant number, since it is smaller than the sum of its proper divisors (85724048).

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

80515312 is a wasteful number, since it uses less digits than its factorization.

80515312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301 (or 3295 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 80515312 is about 8973.0324862891. The cubic root of 80515312 is about 431.8101303252.

The spelling of 80515312 in words is "eighty million, five hundred fifteen thousand, three hundred twelve".