428350508388 has 96 divisors (see below), whose sum is σ = 1237273067520. Its totient is φ = 127041397920.

The previous prime is 428350508363. The next prime is 428350508413. The reversal of 428350508388 is 883805053824.

428350508388 is a `hidden beast` number, since 4 + 2 + 8 + 3 + 50 + 508 + 3 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (428350508363) and next prime (428350508413).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3779956 + ... + 3891627.

It is an arithmetic number, because the mean of its divisors is an integer number (12888261120).

Almost surely, 2^428350508388 is an apocalyptic number.

It is an amenable number.

428350508388 is an abundant number, since it is smaller than the sum of its proper divisors (808922559132).

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

428350508388 is a wasteful number, since it uses less digits than its factorization.

428350508388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7671654 (or 7671646 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 428350508388 in words is "four hundred twenty-eight billion, three hundred fifty million, five hundred eight thousand, three hundred eighty-eight".