38738565 has 24 divisors (see below), whose sum is σ = 67349880. Its totient is φ = 20598144.

The previous prime is 38738551. The next prime is 38738569. The reversal of 38738565 is 56583783.

38738565 is a `hidden beast` number, since 3 + 87 + 3 + 8 + 565 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9998244 + 28740321 = 3162^2 + 5361^2 .

It is not a de Polignac number, because 38738565 - 2⁸ = 38738309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38738565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38738569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16399 + ... + 18611.

It is an arithmetic number, because the mean of its divisors is an integer number (2806245).

Almost surely, 2^38738565 is an apocalyptic number.

It is an amenable number.

38738565 is a deficient number, since it is larger than the sum of its proper divisors (28611315).

38738565 is a wasteful number, since it uses less digits than its factorization.

38738565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 2610 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 38738565 is about 6224.0312499215. The cubic root of 38738565 is about 338.3616829090.

The spelling of 38738565 in words is "thirty-eight million, seven hundred thirty-eight thousand, five hundred sixty-five".