6394521228 has 48 divisors (see below), whose sum is σ = 15794042880. Its totient is φ = 2010141504.

The previous prime is 6394521167. The next prime is 6394521239. The reversal of 6394521228 is 8221254936.

It is a self number, because there is not a number n which added to its sum of digits gives 6394521228.

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, 198700 + ... + 228627.

It is an arithmetic number, because the mean of its divisors is an integer number (329042560).

Almost surely, 2^6394521228 is an apocalyptic number.

It is an amenable number.

6394521228 is an abundant number, since it is smaller than the sum of its proper divisors (9399521652).

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

6394521228 is a wasteful number, since it uses less digits than its factorization.

6394521228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427406 (or 427404 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 6394521228 is about 79965.7503435064. The cubic root of 6394521228 is about 1856.1055862166.

The spelling of 6394521228 in words is "six billion, three hundred ninety-four million, five hundred twenty-one thousand, two hundred twenty-eight".