428085605 has 8 divisors (see below), whose sum is σ = 513945600. Its totient is φ = 342306576.

The previous prime is 428085589. The next prime is 428085607. The reversal of 428085605 is 506580824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428085605 - 2⁴ = 428085589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428085607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7925 + ... + 30314.

It is an arithmetic number, because the mean of its divisors is an integer number (64243200).

Almost surely, 2^428085605 is an apocalyptic number.

It is an amenable number.

428085605 is a deficient number, since it is larger than the sum of its proper divisors (85859995).

428085605 is a wasteful number, since it uses less digits than its factorization.

428085605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40483.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 428085605 is about 20690.2296990633. The cubic root of 428085605 is about 753.6624447381.

The spelling of 428085605 in words is "four hundred twenty-eight million, eighty-five thousand, six hundred five".