1386828244 has 12 divisors (see below), whose sum is σ = 2569711284. Its totient is φ = 652625024.

The previous prime is 1386828211. The next prime is 1386828251. The reversal of 1386828244 is 4428286831.

It can be written as a sum of positive squares in 2 ways, for example, as 1138387600 + 248440644 = 33740^2 + 15762^2 .

It is a super-2 number, since 2×1386828244² = 3846585156712247072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1386828194 and 1386828203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10197199 + ... + 10197334.

It is an arithmetic number, because the mean of its divisors is an integer number (214142607).

Almost surely, 2^1386828244 is an apocalyptic number.

It is an amenable number.

1386828244 is a deficient number, since it is larger than the sum of its proper divisors (1182883040).

1386828244 is a wasteful number, since it uses less digits than its factorization.

1386828244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20394554 (or 20394552 counting only the distinct ones).

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

The square root of 1386828244 is about 37240.1429105743. The cubic root of 1386828244 is about 1115.1695249222.

The spelling of 1386828244 in words is "one billion, three hundred eighty-six million, eight hundred twenty-eight thousand, two hundred forty-four".