581536480 has 48 divisors (see below), whose sum is σ = 1570151520. Its totient is φ = 199383552.

The previous prime is 581536457. The next prime is 581536481. The reversal of 581536480 is 84635185.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581536481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258495 + ... + 260734.

It is an arithmetic number, because the mean of its divisors is an integer number (32711490).

Almost surely, 2^581536480 is an apocalyptic number.

It is an amenable number.

581536480 is an abundant number, since it is smaller than the sum of its proper divisors (988615040).

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

581536480 is a wasteful number, since it uses less digits than its factorization.

581536480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519251 (or 519243 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 581536480 is about 24115.0674890202. The cubic root of 581536480 is about 834.6908533221.

The spelling of 581536480 in words is "five hundred eighty-one million, five hundred thirty-six thousand, four hundred eighty".