428655616 has 33 divisors (see below), whose sum is σ = 858219079. Its totient is φ = 213996544.

The previous prime is 428655593. The next prime is 428655673. The reversal of 428655616 is 616556824.

The square root of 428655616 is 20704.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 662205 + ... + 662851.

Almost surely, 2^428655616 is an apocalyptic number.

428655616 is the 20704-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428655616

428655616 is an abundant number, since it is smaller than the sum of its proper divisors (429563463).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428655616 is an frugal number, since it uses more digits than its factorization.

428655616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314 (or 649 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The cubic root of 428655616 is about 753.9968057052.

The spelling of 428655616 in words is "four hundred twenty-eight million, six hundred fifty-five thousand, six hundred sixteen".