1912628728 has 16 divisors (see below), whose sum is σ = 3587720760. Its totient is φ = 955903200.

The previous prime is 1912628723. The next prime is 1912628737. The reversal of 1912628728 is 8278262191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912628723) 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 3 ways as a sum of consecutive naturals, for example, 31158 + ... + 69253.

Almost surely, 2^1912628728 is an apocalyptic number.

It is an amenable number.

1912628728 is a deficient number, since it is larger than the sum of its proper divisors (1675092032).

1912628728 is a wasteful number, since it uses less digits than its factorization.

1912628728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102798 (or 102794 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The square root of 1912628728 is about 43733.6109645659. The cubic root of 1912628728 is about 1241.3003891858.

The spelling of 1912628728 in words is "one billion, nine hundred twelve million, six hundred twenty-eight thousand, seven hundred twenty-eight".