38784145 has 8 divisors (see below), whose sum is σ = 46582056. Its totient is φ = 30999936.

The previous prime is 38784139. The next prime is 38784169. The reversal of 38784145 is 54148783.

38784145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4596736 + 34187409 = 2144^2 + 5847^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38784145 - 2⁵ = 38784113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38784098 and 38784107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4459 + ... + 9871.

It is an arithmetic number, because the mean of its divisors is an integer number (5822757).

Almost surely, 2^38784145 is an apocalyptic number.

It is an amenable number.

38784145 is a deficient number, since it is larger than the sum of its proper divisors (7797911).

38784145 is a wasteful number, since it uses less digits than its factorization.

38784145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6851.

The product of its digits is 107520, while the sum is 40.

The square root of 38784145 is about 6227.6917874924. The cubic root of 38784145 is about 338.4943369426.

The spelling of 38784145 in words is "thirty-eight million, seven hundred eighty-four thousand, one hundred forty-five".