428136144 has 20 divisors (see below), whose sum is σ = 1106018496. Its totient is φ = 142712032.

The previous prime is 428136131. The next prime is 428136151. The reversal of 428136144 is 441631824.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4459704 + ... + 4459799.

Almost surely, 2^428136144 is an apocalyptic number.

It is an amenable number.

428136144 is an abundant number, since it is smaller than the sum of its proper divisors (677882352).

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

428136144 is a wasteful number, since it uses less digits than its factorization.

428136144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8919514 (or 8919508 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 428136144 is about 20691.4509882705. The cubic root of 428136144 is about 753.6921022388.

Adding to 428136144 its reverse (441631824), we get a palindrome (869767968).

The spelling of 428136144 in words is "four hundred twenty-eight million, one hundred thirty-six thousand, one hundred forty-four".