428320611 has 6 divisors (see below), whose sum is σ = 618685340. Its totient is φ = 285547068.

The previous prime is 428320609. The next prime is 428320619. The reversal of 428320611 is 116023824.

428320611 is a `hidden beast` number, since 4 + 28 + 3 + 20 + 611 = 666.

It is not a de Polignac number, because 428320611 - 2¹ = 428320609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428320619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23795581 + ... + 23795598.

Almost surely, 2^428320611 is an apocalyptic number.

428320611 is a deficient number, since it is larger than the sum of its proper divisors (190364729).

428320611 is a wasteful number, since it uses less digits than its factorization.

428320611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47591185 (or 47591182 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 428320611 is about 20695.9080738198. The cubic root of 428320611 is about 753.8003321092.

The spelling of 428320611 in words is "four hundred twenty-eight million, three hundred twenty thousand, six hundred eleven".