80315040 has 192 divisors, whose sum is σ = 278232192. Its totient is φ = 19353600.

The previous prime is 80315029. The next prime is 80315041. The reversal of 80315040 is 4051308.

It is a junction number, because it is equal to n+sod(n) for n = 80314998 and 80315016.

It is not an unprimeable number, because it can be changed into a prime (80315041) 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, 380535 + ... + 380745.

It is an arithmetic number, because the mean of its divisors is an integer number (1449126).

Almost surely, 2^80315040 is an apocalyptic number.

80315040 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 80315040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139116096).

80315040 is an abundant number, since it is smaller than the sum of its proper divisors (197917152).

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

80315040 is a wasteful number, since it uses less digits than its factorization.

80315040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 80315040 is about 8961.8658771486. The cubic root of 80315040 is about 431.4518080885.

Adding to 80315040 its reverse (4051308), we get a palindrome (84366348).

The spelling of 80315040 in words is "eighty million, three hundred fifteen thousand, forty".