1138672828 has 24 divisors (see below), whose sum is σ = 2061128160. Its totient is φ = 550049280.

The previous prime is 1138672813. The next prime is 1138672837. The reversal of 1138672828 is 8282768311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16813 + ... + 50596.

It is an arithmetic number, because the mean of its divisors is an integer number (85880340).

Almost surely, 2^1138672828 is an apocalyptic number.

It is an amenable number.

1138672828 is a deficient number, since it is larger than the sum of its proper divisors (922455332).

1138672828 is a wasteful number, since it uses less digits than its factorization.

1138672828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67557 (or 67555 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 1138672828 is about 33744.2265876698. The cubic root of 1138672828 is about 1044.2383828061.

The spelling of 1138672828 in words is "one billion, one hundred thirty-eight million, six hundred seventy-two thousand, eight hundred twenty-eight".