38917838 has 8 divisors (see below), whose sum is σ = 59734488. Its totient is φ = 19006344.

The previous prime is 38917819. The next prime is 38917841. The reversal of 38917838 is 83871983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×38917838² = 3029196229188488, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38917792 and 38917801.

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, 226181 + ... + 226352.

It is an arithmetic number, because the mean of its divisors is an integer number (7466811).

Almost surely, 2^38917838 is an apocalyptic number.

38917838 is a deficient number, since it is larger than the sum of its proper divisors (20816650).

38917838 is a wasteful number, since it uses less digits than its factorization.

38917838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452578.

The product of its digits is 290304, while the sum is 47.

The square root of 38917838 is about 6238.4163054416. The cubic root of 38917838 is about 338.8828326707.

The spelling of 38917838 in words is "thirty-eight million, nine hundred seventeen thousand, eight hundred thirty-eight".