573697728 has 168 divisors, whose sum is σ = 1753150672. Its totient is φ = 185877504.

The previous prime is 573697681. The next prime is 573697739. The reversal of 573697728 is 827796375.

573697728 is a `hidden beast` number, since 573 + 69 + 7 + 7 + 2 + 8 = 666.

It is a super-2 number, since 2×573697728² = 658258166224723968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 574926 + ... + 575922.

Almost surely, 2^573697728 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 573697728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876575336).

573697728 is an abundant number, since it is smaller than the sum of its proper divisors (1179452944).

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

573697728 is an equidigital number, since it uses as much as digits as its factorization.

573697728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 1039 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The square root of 573697728 is about 23951.9879759489. The cubic root of 573697728 is about 830.9235029741.

The spelling of 573697728 in words is "five hundred seventy-three million, six hundred ninety-seven thousand, seven hundred twenty-eight".