428576667 has 16 divisors (see below), whose sum is σ = 582858528. Its totient is φ = 280039680.

The previous prime is 428576663. The next prime is 428576669. The reversal of 428576667 is 766675824.

It is not a de Polignac number, because 428576667 - 2² = 428576663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428576663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49623 + ... + 57615.

It is an arithmetic number, because the mean of its divisors is an integer number (36428658).

Almost surely, 2^428576667 is an apocalyptic number.

428576667 is a deficient number, since it is larger than the sum of its proper divisors (154281861).

428576667 is a wasteful number, since it uses less digits than its factorization.

428576667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8350.

The product of its digits is 3386880, while the sum is 51.

The square root of 428576667 is about 20702.0932999540. The cubic root of 428576667 is about 753.9505129498.

The spelling of 428576667 in words is "four hundred twenty-eight million, five hundred seventy-six thousand, six hundred sixty-seven".