428610647 has 8 divisors (see below), whose sum is σ = 457289712. Its totient is φ = 400316800.

The previous prime is 428610643. The next prime is 428610661. The reversal of 428610647 is 746016824.

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 428610647 - 2² = 428610643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428610647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428610641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94004 + ... + 98457.

It is an arithmetic number, because the mean of its divisors is an integer number (57161214).

Almost surely, 2^428610647 is an apocalyptic number.

428610647 is a deficient number, since it is larger than the sum of its proper divisors (28679065).

428610647 is a wasteful number, since it uses less digits than its factorization.

428610647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192609.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 428610647 is about 20702.9139736415. The cubic root of 428610647 is about 753.9704382540.

The spelling of 428610647 in words is "four hundred twenty-eight million, six hundred ten thousand, six hundred forty-seven".