80347280 has 80 divisors (see below), whose sum is σ = 209986560. Its totient is φ = 28368384.

The previous prime is 80347273. The next prime is 80347283. The reversal of 80347280 is 8274308.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (80347283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22241 + ... + 25599.

It is an arithmetic number, because the mean of its divisors is an integer number (2624832).

Almost surely, 2^80347280 is an apocalyptic number.

80347280 is a gapful number since it is divisible by the number (80) 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 80347280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104993280).

80347280 is an abundant number, since it is smaller than the sum of its proper divisors (129639280).

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

80347280 is a wasteful number, since it uses less digits than its factorization.

80347280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408 (or 3402 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 80347280 is about 8963.6644292387. The cubic root of 80347280 is about 431.5095313802.

It can be divided in two parts, 8034 and 7280, that multiplied together give a triangular number (58487520 = T₁₀₈₁₅).

The spelling of 80347280 in words is "eighty million, three hundred forty-seven thousand, two hundred eighty".