13928003838 has 64 divisors (see below), whose sum is σ = 36195371520. Its totient is φ = 3886880256.

The previous prime is 13928003773. The next prime is 13928003861. The reversal of 13928003838 is 83830082931.

It is a super-2 number, since 2×13928003838² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13928003793 and 13928003802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412195 + ... + 444702.

It is an arithmetic number, because the mean of its divisors is an integer number (565552680).

Almost surely, 2^13928003838 is an apocalyptic number.

13928003838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13928003838 is an abundant number, since it is smaller than the sum of its proper divisors (22267367682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13928003838 is a wasteful number, since it uses less digits than its factorization.

13928003838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856958 (or 856952 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 13928003838 in words is "thirteen billion, nine hundred twenty-eight million, three thousand, eight hundred thirty-eight".