38784005 has 16 divisors (see below), whose sum is σ = 50425200. Its totient is φ = 28466688.

The previous prime is 38784001. The next prime is 38784013. The reversal of 38784005 is 50048783.

It can be written as a sum of positive squares in 8 ways, for example, as 5410276 + 33373729 = 2326^2 + 5777^2 .

It is a cyclic number.

It is not a de Polignac number, because 38784005 - 2² = 38784001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38784001) 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, 9521 + ... + 12969.

It is an arithmetic number, because the mean of its divisors is an integer number (3151575).

Almost surely, 2^38784005 is an apocalyptic number.

It is an amenable number.

38784005 is a deficient number, since it is larger than the sum of its proper divisors (11641195).

38784005 is a wasteful number, since it uses less digits than its factorization.

38784005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 38784005 is about 6227.6805473627. The cubic root of 38784005 is about 338.4939296519.

The spelling of 38784005 in words is "thirty-eight million, seven hundred eighty-four thousand, five".