428604820 has 24 divisors (see below), whose sum is σ = 1028651904. Its totient is φ = 146950176.

The previous prime is 428604817. The next prime is 428604821. The reversal of 428604820 is 28406824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428604821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1530592 + ... + 1530871.

It is an arithmetic number, because the mean of its divisors is an integer number (42860496).

Almost surely, 2^428604820 is an apocalyptic number.

It is an amenable number.

428604820 is an abundant number, since it is smaller than the sum of its proper divisors (600047084).

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

428604820 is a wasteful number, since it uses less digits than its factorization.

428604820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061479 (or 3061477 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 428604820 is about 20702.7732441816. The cubic root of 428604820 is about 753.9670214734.

The spelling of 428604820 in words is "four hundred twenty-eight million, six hundred four thousand, eight hundred twenty".