428200820 has 48 divisors (see below), whose sum is σ = 911167488. Its totient is φ = 169021440.

The previous prime is 428200813. The next prime is 428200841. The reversal of 428200820 is 28002824.

It is a self number, because there is not a number n which added to its sum of digits gives 428200820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667700 + ... + 668340.

It is an arithmetic number, because the mean of its divisors is an integer number (18982656).

Almost surely, 2^428200820 is an apocalyptic number.

It is an amenable number.

428200820 is an abundant number, since it is smaller than the sum of its proper divisors (482966668).

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

428200820 is a wasteful number, since it uses less digits than its factorization.

428200820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 428200820 is about 20693.0137969316. The cubic root of 428200820 is about 753.7300522669.

The spelling of 428200820 in words is "four hundred twenty-eight million, two hundred thousand, eight hundred twenty".