38393838 has 40 divisors (see below), whose sum is σ = 98323632. Its totient is φ = 10969344.

The previous prime is 38393821. The next prime is 38393843. The reversal of 38393838 is 83839383.

It is a super-3 number, since 3×38393838³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38393793 and 38393802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15795 + ... + 18062.

Almost surely, 2^38393838 is an apocalyptic number.

38393838 is an abundant number, since it is smaller than the sum of its proper divisors (59929794).

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

38393838 is a wasteful number, since it uses less digits than its factorization.

38393838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33878 (or 33869 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 38393838 is about 6196.2761397472. The cubic root of 38393838 is about 337.3550192106.

The spelling of 38393838 in words is "thirty-eight million, three hundred ninety-three thousand, eight hundred thirty-eight".