38366865 has 40 divisors (see below), whose sum is σ = 69948648. Its totient is φ = 20113920.

The previous prime is 38366863. The next prime is 38366917. The reversal of 38366865 is 56866383.

It can be written as a sum of positive squares in 4 ways, for example, as 1679616 + 36687249 = 1296^2 + 6057^2 .

It is not a de Polignac number, because 38366865 - 2¹ = 38366863 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 38366865.

It is not an unprimeable number, because it can be changed into a prime (38366863) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23929 + ... + 25481.

Almost surely, 2^38366865 is an apocalyptic number.

It is an amenable number.

38366865 is a deficient number, since it is larger than the sum of its proper divisors (31581783).

38366865 is a wasteful number, since it uses less digits than its factorization.

38366865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631 (or 1622 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 38366865 is about 6194.0992081174. The cubic root of 38366865 is about 337.2759995108.

It can be divided in two parts, 3836 and 6865, that added together give a palindrome (10701).

The spelling of 38366865 in words is "thirty-eight million, three hundred sixty-six thousand, eight hundred sixty-five".