38105992 has 8 divisors (see below), whose sum is σ = 71448750. Its totient is φ = 19052992.

The previous prime is 38105981. The next prime is 38105999. The reversal of 38105992 is 29950183.

It can be written as a sum of positive squares in only one way, i.e., 38019556 + 86436 = 6166^2 + 294^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (38105999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2381617 + ... + 2381632.

Almost surely, 2^38105992 is an apocalyptic number.

It is an amenable number.

38105992 is a deficient number, since it is larger than the sum of its proper divisors (33342758).

38105992 is a wasteful number, since it uses less digits than its factorization.

38105992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763255 (or 4763251 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 38105992 is about 6173.0051028652. The cubic root of 38105992 is about 336.5098316437.

It can be divided in two parts, 38 and 105992, that added together give a triangular number (106030 = T₄₆₀).

The spelling of 38105992 in words is "thirty-eight million, one hundred five thousand, nine hundred ninety-two".