38975645 has 16 divisors (see below), whose sum is σ = 50340528. Its totient is φ = 28861440.

The previous prime is 38975627. The next prime is 38975647. The reversal of 38975645 is 54657983.

38975645 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 8 ways, for example, as 63001 + 38912644 = 251^2 + 6238^2 .

It is not a de Polignac number, because 38975645 - 2¹⁸ = 38713501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38975645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38975647) 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 15 ways as a sum of consecutive naturals, for example, 1427 + ... + 8943.

It is an arithmetic number, because the mean of its divisors is an integer number (3146283).

Almost surely, 2^38975645 is an apocalyptic number.

It is an amenable number.

38975645 is a deficient number, since it is larger than the sum of its proper divisors (11364883).

38975645 is a wasteful number, since it uses less digits than its factorization.

38975645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7600.

The product of its digits is 907200, while the sum is 47.

The square root of 38975645 is about 6243.0477332790. The cubic root of 38975645 is about 339.0505373327.

The spelling of 38975645 in words is "thirty-eight million, nine hundred seventy-five thousand, six hundred forty-five".