305224729 has 16 divisors (see below), whose sum is σ = 325080576. Its totient is φ = 286070400.

The previous prime is 305224723. The next prime is 305224769. The reversal of 305224729 is 927422503.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 305224729 - 2²³ = 296836121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305224694 and 305224703.

It is not an unprimeable number, because it can be changed into a prime (305224723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321834 + ... + 322780.

It is an arithmetic number, because the mean of its divisors is an integer number (20317536).

Almost surely, 2^305224729 is an apocalyptic number.

It is an amenable number.

305224729 is a deficient number, since it is larger than the sum of its proper divisors (19855847).

305224729 is a wasteful number, since it uses less digits than its factorization.

305224729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 305224729 is about 17470.6819843989. The cubic root of 305224729 is about 673.2968339254.

The spelling of 305224729 in words is "three hundred five million, two hundred twenty-four thousand, seven hundred twenty-nine".