38105930 has 32 divisors (see below), whose sum is σ = 70958160. Its totient is φ = 14722560.

The previous prime is 38105923. The next prime is 38105939. The reversal of 38105930 is 3950183.

It is a Cunningham number, because it is equal to 6173²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 6285049 + 31820881 = 2507^2 + 5641^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38105893 and 38105902.

It is not an unprimeable number, because it can be changed into a prime (38105939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66686 + ... + 67254.

Almost surely, 2^38105930 is an apocalyptic number.

38105930 is a deficient number, since it is larger than the sum of its proper divisors (32852230).

38105930 is a wasteful number, since it uses less digits than its factorization.

38105930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 38105930 is about 6173.0000809979. Note that the first 4 decimals coincide. The cubic root of 38105930 is about 336.5096491386.

The spelling of 38105930 in words is "thirty-eight million, one hundred five thousand, nine hundred thirty".