428645586 has 32 divisors (see below), whose sum is σ = 923408640. Its totient is φ = 132212304.

The previous prime is 428645573. The next prime is 428645647. The reversal of 428645586 is 685546824.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38820 + ... + 48623.

It is an arithmetic number, because the mean of its divisors is an integer number (28856520).

Almost surely, 2^428645586 is an apocalyptic number.

428645586 is an abundant number, since it is smaller than the sum of its proper divisors (494763054).

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

428645586 is a wasteful number, since it uses less digits than its factorization.

428645586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87510.

The product of its digits is 1843200, while the sum is 48.

The square root of 428645586 is about 20703.7577748582. The cubic root of 428645586 is about 753.9909248017.

The spelling of 428645586 in words is "four hundred twenty-eight million, six hundred forty-five thousand, five hundred eighty-six".