80680320 has 512 divisors, whose sum is σ = 352512000. Its totient is φ = 17031168.

The previous prime is 80680307. The next prime is 80680337. The reversal of 80680320 is 2308608.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 63 ways as a sum of consecutive naturals, for example, 2782066 + ... + 2782094.

It is an arithmetic number, because the mean of its divisors is an integer number (688500).

Almost surely, 2^80680320 is an apocalyptic number.

80680320 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 80680320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176256000).

80680320 is an abundant number, since it is smaller than the sum of its proper divisors (271831680).

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

80680320 is a wasteful number, since it uses less digits than its factorization.

80680320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 80680320 is about 8982.2224421354. Note that the first 3 decimals coincide. The cubic root of 80680320 is about 432.1049127911.

Adding to 80680320 its reverse (2308608), we get a palindrome (82988928).

The spelling of 80680320 in words is "eighty million, six hundred eighty thousand, three hundred twenty".