1338806428 has 12 divisors (see below), whose sum is σ = 2343263832. Its totient is φ = 669302480.

The previous prime is 1338806411. The next prime is 1338806461. The reversal of 1338806428 is 8246088331.

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, 10263 + ... + 52753.

It is an arithmetic number, because the mean of its divisors is an integer number (195271986).

Almost surely, 2^1338806428 is an apocalyptic number.

It is an amenable number.

1338806428 is a deficient number, since it is larger than the sum of its proper divisors (1004457404).

1338806428 is a wasteful number, since it uses less digits than its factorization.

1338806428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50372 (or 50370 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 1338806428 is about 36589.7038523134. The cubic root of 1338806428 is about 1102.1463404263.

The spelling of 1338806428 in words is "one billion, three hundred thirty-eight million, eight hundred six thousand, four hundred twenty-eight".