80317440 has 352 divisors, whose sum is σ = 330140160. Its totient is φ = 18137088.

The previous prime is 80317439. The next prime is 80317441. The reversal of 80317440 is 4471308.

It is an interprime number because it is at equal distance from previous prime (80317439) and next prime (80317441).

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

It is not an unprimeable number, because it can be changed into a prime (80317441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 967639 + ... + 967721.

Almost surely, 2^80317440 is an apocalyptic number.

80317440 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 80317440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165070080).

80317440 is an abundant number, since it is smaller than the sum of its proper divisors (249822720).

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

80317440 is a wasteful number, since it uses less digits than its factorization.

80317440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 80317440 is about 8961.9997768355. Note that the first 3 decimals coincide. The cubic root of 80317440 is about 431.4561056398.

Adding to 80317440 its reverse (4471308), we get a palindrome (84788748).

The spelling of 80317440 in words is "eighty million, three hundred seventeen thousand, four hundred forty".