428616529 has 16 divisors (see below), whose sum is σ = 498441600. Its totient is φ = 364245760.

The previous prime is 428616521. The next prime is 428616541. The reversal of 428616529 is 925616824.

It is a cyclic number.

It is not a de Polignac number, because 428616529 - 2³ = 428616521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428616521) 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 15 ways as a sum of consecutive naturals, for example, 20172 + ... + 35554.

It is an arithmetic number, because the mean of its divisors is an integer number (31152600).

Almost surely, 2^428616529 is an apocalyptic number.

It is an amenable number.

428616529 is a deficient number, since it is larger than the sum of its proper divisors (69825071).

428616529 is a wasteful number, since it uses less digits than its factorization.

428616529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15560.

The product of its digits is 207360, while the sum is 43.

The square root of 428616529 is about 20703.0560304512. The cubic root of 428616529 is about 753.9738872536.

The spelling of 428616529 in words is "four hundred twenty-eight million, six hundred sixteen thousand, five hundred twenty-nine".