80590440 has 128 divisors (see below), whose sum is σ = 283887360. Its totient is φ = 17915904.

The previous prime is 80590429. The next prime is 80590441. The reversal of 80590440 is 4409508.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 80590398 and 80590407.

It is not an unprimeable number, because it can be changed into a prime (80590441) 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, 29784 + ... + 32376.

It is an arithmetic number, because the mean of its divisors is an integer number (2217870).

Almost surely, 2^80590440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80590440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141943680).

80590440 is an abundant number, since it is smaller than the sum of its proper divisors (203296920).

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

80590440 is a wasteful number, since it uses less digits than its factorization.

80590440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651 (or 2647 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 80590440 is about 8977.2178318230. The cubic root of 80590440 is about 431.9443944204.

Adding to 80590440 its reverse (4409508), we get a palindrome (84999948).

The spelling of 80590440 in words is "eighty million, five hundred ninety thousand, four hundred forty".