1238628844 has 12 divisors (see below), whose sum is σ = 2261844144. Its totient is φ = 592387664.

The previous prime is 1238628757. The next prime is 1238628877. The reversal of 1238628844 is 4488268321.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 1238628794 and 1238628803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6731587 + ... + 6731770.

It is an arithmetic number, because the mean of its divisors is an integer number (188487012).

Almost surely, 2^1238628844 is an apocalyptic number.

It is an amenable number.

1238628844 is a deficient number, since it is larger than the sum of its proper divisors (1023215300).

1238628844 is a wasteful number, since it uses less digits than its factorization.

1238628844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13463384 (or 13463382 counting only the distinct ones).

The product of its digits is 589824, while the sum is 46.

The square root of 1238628844 is about 35194.1592313270. The cubic root of 1238628844 is about 1073.9409346935.

The spelling of 1238628844 in words is "one billion, two hundred thirty-eight million, six hundred twenty-eight thousand, eight hundred forty-four".