428204144236 has 48 divisors (see below), whose sum is σ = 821075996160. Its totient is φ = 193783968000.

The previous prime is 428204144227. The next prime is 428204144239. The reversal of 428204144236 is 632441402824.

It is not an unprimeable number, because it can be changed into a prime (428204144239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9945796 + ... + 9988756.

It is an arithmetic number, because the mean of its divisors is an integer number (17105749920).

Almost surely, 2^428204144236 is an apocalyptic number.

It is an amenable number.

428204144236 is a deficient number, since it is larger than the sum of its proper divisors (392871851924).

428204144236 is a wasteful number, since it uses less digits than its factorization.

428204144236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43966 (or 43964 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 40.

The spelling of 428204144236 in words is "four hundred twenty-eight billion, two hundred four million, one hundred forty-four thousand, two hundred thirty-six".