38828665 has 4 divisors (see below), whose sum is σ = 46594404. Its totient is φ = 31062928.

The previous prime is 38828659. The next prime is 38828683. The reversal of 38828665 is 56682883.

It is a happy number.

38828665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56682883 = 3329 ⋅17027.

It can be written as a sum of positive squares in 2 ways, for example, as 12981609 + 25847056 = 3603^2 + 5084^2 .

It is a cyclic number.

It is not a de Polignac number, because 38828665 - 2⁵ = 38828633 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 3882862 + ... + 3882871.

It is an arithmetic number, because the mean of its divisors is an integer number (11648601).

Almost surely, 2^38828665 is an apocalyptic number.

It is an amenable number.

38828665 is a deficient number, since it is larger than the sum of its proper divisors (7765739).

38828665 is an equidigital number, since it uses as much as digits as its factorization.

38828665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7765738.

The product of its digits is 552960, while the sum is 46.

The square root of 38828665 is about 6231.2651203427. The cubic root of 38828665 is about 338.6238057019.

It can be divided in two parts, 38828 and 665, that added together give a palindrome (39493).

The spelling of 38828665 in words is "thirty-eight million, eight hundred twenty-eight thousand, six hundred sixty-five".