428244992 has 64 divisors (see below), whose sum is σ = 979355040. Its totient is φ = 183435264.

The previous prime is 428244953. The next prime is 428245003. The reversal of 428244992 is 299442824.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228443 + ... + 230309.

Almost surely, 2^428244992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428244992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489677520).

428244992 is an abundant number, since it is smaller than the sum of its proper divisors (551110048).

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

428244992 is an frugal number, since it uses more digits than its factorization.

428244992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904 (or 1876 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 428244992 is about 20694.0810861463. The cubic root of 428244992 is about 753.7559689377.

The spelling of 428244992 in words is "four hundred twenty-eight million, two hundred forty-four thousand, nine hundred ninety-two".