1428688804 has 9 divisors (see below), whose sum is σ = 2500337707. Its totient is φ = 714306604.

The previous prime is 1428688801. The next prime is 1428688817. The reversal of 1428688804 is 4088868241.

It is a happy number.

The square root of 1428688804 is 37798.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428688801) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 66147 + ... + 85045.

Almost surely, 2^1428688804 is an apocalyptic number.

1428688804 is the 37798-th square number.

It is an amenable number.

1428688804 is a deficient number, since it is larger than the sum of its proper divisors (1071648903).

1428688804 is an frugal number, since it uses more digits than its factorization.

1428688804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37802 (or 18901 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 49.

The cubic root of 1428688804 is about 1126.2787248253.

Multiplying 1428688804 by its sum of digits (49), we get a square (70005751396 = 264586²).

The spelling of 1428688804 in words is "one billion, four hundred twenty-eight million, six hundred eighty-eight thousand, eight hundred four".