428616530 has 16 divisors (see below), whose sum is σ = 774382680. Its totient is φ = 170808192.

The previous prime is 428616521. The next prime is 428616541. The reversal of 428616530 is 35616824.

It can be written as a sum of positive squares in 4 ways, for example, as 287743369 + 140873161 = 16963^2 + 11869^2 .

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 7 ways as a sum of consecutive naturals, for example, 76979 + ... + 82358.

Almost surely, 2^428616530 is an apocalyptic number.

428616530 is a deficient number, since it is larger than the sum of its proper divisors (345766150).

428616530 is a wasteful number, since it uses less digits than its factorization.

428616530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159613.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 428616530 is about 20703.0560546022. The cubic root of 428616530 is about 753.9738878400.

The spelling of 428616530 in words is "four hundred twenty-eight million, six hundred sixteen thousand, five hundred thirty".