581240448 has 112 divisors (see below), whose sum is σ = 1736394450. Its totient is φ = 193715712.

The previous prime is 581240441. The next prime is 581240461. The reversal of 581240448 is 844042185.

It can be written as a sum of positive squares in only one way, i.e., 494973504 + 86266944 = 22248^2 + 9288^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (581240441) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 90198 + ... + 96426.

Almost surely, 2^581240448 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 581240448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868197225).

581240448 is an abundant number, since it is smaller than the sum of its proper divisors (1155154002).

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

581240448 is an frugal number, since it uses more digits than its factorization.

581240448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6261 (or 6234 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 581240448 is about 24108.9288024168. The cubic root of 581240448 is about 834.5491957471.

The spelling of 581240448 in words is "five hundred eighty-one million, two hundred forty thousand, four hundred forty-eight".