428670609 has 16 divisors (see below), whose sum is σ = 603220800. Its totient is φ = 270029376.

The previous prime is 428670587. The next prime is 428670629. The reversal of 428670609 is 906076824.

It is not a de Polignac number, because 428670609 - 2¹⁷ = 428539537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428670629) 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, 12507 + ... + 31839.

It is an arithmetic number, because the mean of its divisors is an integer number (37701300).

Almost surely, 2^428670609 is an apocalyptic number.

It is an amenable number.

428670609 is a deficient number, since it is larger than the sum of its proper divisors (174550191).

428670609 is a wasteful number, since it uses less digits than its factorization.

428670609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19744.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 428670609 is about 20704.3620766253. The cubic root of 428670609 is about 754.0055964002.

The spelling of 428670609 in words is "four hundred twenty-eight million, six hundred seventy thousand, six hundred nine".