581038240 has 96 divisors (see below), whose sum is σ = 1530083520. Its totient is φ = 207212544.

The previous prime is 581038217. The next prime is 581038243. The reversal of 581038240 is 42830185.

It is not an unprimeable number, because it can be changed into a prime (581038243) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 46059 + ... + 57301.

It is an arithmetic number, because the mean of its divisors is an integer number (15938370).

Almost surely, 2^581038240 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 581038240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765041760).

581038240 is an abundant number, since it is smaller than the sum of its proper divisors (949045280).

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

581038240 is a wasteful number, since it uses less digits than its factorization.

581038240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11294 (or 11286 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 581038240 is about 24104.7348045980. The cubic root of 581038240 is about 834.4524072910.

The spelling of 581038240 in words is "five hundred eighty-one million, thirty-eight thousand, two hundred forty".