428107205220 has 48 divisors (see below), whose sum is σ = 1199064081600. Its totient is φ = 114127263616.

The previous prime is 428107205153. The next prime is 428107205221. The reversal of 428107205220 is 22502701824.

It is a super-2 number, since 2×428107205220² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428107205221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 883467 + ... + 1279346.

It is an arithmetic number, because the mean of its divisors is an integer number (24980501700).

Almost surely, 2^428107205220 is an apocalyptic number.

It is an amenable number.

428107205220 is an abundant number, since it is smaller than the sum of its proper divisors (770956876380).

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

428107205220 is a wasteful number, since it uses less digits than its factorization.

428107205220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166124 (or 2166122 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The spelling of 428107205220 in words is "four hundred twenty-eight billion, one hundred seven million, two hundred five thousand, two hundred twenty".