38688436 has 24 divisors (see below), whose sum is σ = 70436520. Its totient is φ = 18571392.

The previous prime is 38688431. The next prime is 38688437. The reversal of 38688436 is 63488683.

38688436 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 4 ways, for example, as 14776336 + 23912100 = 3844^2 + 4890^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38688431) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22006 + ... + 23698.

It is an arithmetic number, because the mean of its divisors is an integer number (2934855).

Almost surely, 2^38688436 is an apocalyptic number.

It is an amenable number.

38688436 is a deficient number, since it is larger than the sum of its proper divisors (31748084).

38688436 is a wasteful number, since it uses less digits than its factorization.

38688436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923 (or 1921 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The square root of 38688436 is about 6220.0028938900. The cubic root of 38688436 is about 338.2156694603.

It can be divided in two parts, 386884 and 36, that multiplied together give a square (13927824 = 3732²).

The spelling of 38688436 in words is "thirty-eight million, six hundred eighty-eight thousand, four hundred thirty-six".