80320240 has 320 divisors, whose sum is σ = 269982720. Its totient is φ = 21381120.

The previous prime is 80320237. The next prime is 80320283. The reversal of 80320240 is 4202308.

It is a happy number.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 1361331 + ... + 1361389.

It is an arithmetic number, because the mean of its divisors is an integer number (843696).

Almost surely, 2^80320240 is an apocalyptic number.

80320240 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 80320240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134991360).

80320240 is an abundant number, since it is smaller than the sum of its proper divisors (189662480).

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

80320240 is a wasteful number, since it uses less digits than its factorization.

80320240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 80320240 is about 8962.1559906085. The cubic root of 80320240 is about 431.4611193415.

Adding to 80320240 its reverse (4202308), we get a palindrome (84522548).

The spelling of 80320240 in words is "eighty million, three hundred twenty thousand, two hundred forty".