428541647 has 8 divisors (see below), whose sum is σ = 430548960. Its totient is φ = 426539520.

The previous prime is 428541643. The next prime is 428541649. The reversal of 428541647 is 746145824.

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 428541647 - 2² = 428541643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428541643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323747 + ... + 325067.

It is an arithmetic number, because the mean of its divisors is an integer number (53818620).

Almost surely, 2^428541647 is an apocalyptic number.

428541647 is a deficient number, since it is larger than the sum of its proper divisors (2007313).

428541647 is a wasteful number, since it uses less digits than its factorization.

428541647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its digits is 215040, while the sum is 41.

The square root of 428541647 is about 20701.2474744881. The cubic root of 428541647 is about 753.9299767049.

The spelling of 428541647 in words is "four hundred twenty-eight million, five hundred forty-one thousand, six hundred forty-seven".