581474730 has 64 divisors (see below), whose sum is σ = 1463132160. Its totient is φ = 147614016.

The previous prime is 581474687. The next prime is 581474731. The reversal of 581474730 is 37474185.

It is a super-2 number, since 2×581474730² = 676225723257145800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (581474731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151981 + ... + 155759.

It is an arithmetic number, because the mean of its divisors is an integer number (22861440).

Almost surely, 2^581474730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 581474730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (731566080).

581474730 is an abundant number, since it is smaller than the sum of its proper divisors (881657430).

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

581474730 is a wasteful number, since it uses less digits than its factorization.

581474730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 581474730 is about 24113.7871351640. The cubic root of 581474730 is about 834.6613086094.

The spelling of 581474730 in words is "five hundred eighty-one million, four hundred seventy-four thousand, seven hundred thirty".