38147805 has 12 divisors (see below), whose sum is σ = 66122940. Its totient is φ = 20345472.

The previous prime is 38147797. The next prime is 38147827. The reversal of 38147805 is 50874183.

38147805 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 2 ways, for example, as 15280281 + 22867524 = 3909^2 + 4782^2 .

It is not a de Polignac number, because 38147805 - 2³ = 38147797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38147805.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 423820 + ... + 423909.

It is an arithmetic number, because the mean of its divisors is an integer number (5510245).

Almost surely, 2^38147805 is an apocalyptic number.

It is an amenable number.

38147805 is a deficient number, since it is larger than the sum of its proper divisors (27975135).

38147805 is a wasteful number, since it uses less digits than its factorization.

38147805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847740 (or 847737 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 38147805 is about 6176.3909364612. The cubic root of 38147805 is about 336.6328686567.

The spelling of 38147805 in words is "thirty-eight million, one hundred forty-seven thousand, eight hundred five".