38836845 has 18 divisors (see below), whose sum is σ = 67389738. Its totient is φ = 20690688.

The previous prime is 38836843. The next prime is 38836849. The reversal of 38836845 is 54863883.

It can be written as a sum of positive squares in 3 ways, for example, as 3944196 + 34892649 = 1986^2 + 5907^2 .

It is not a de Polignac number, because 38836845 - 2¹ = 38836843 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 38836845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38836843) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41341 + ... + 42269.

Almost surely, 2^38836845 is an apocalyptic number.

It is an amenable number.

38836845 is a deficient number, since it is larger than the sum of its proper divisors (28552893).

38836845 is an frugal number, since it uses more digits than its factorization.

38836845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869 (or 937 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 38836845 is about 6231.9214532919. The cubic root of 38836845 is about 338.6475832233.

Multiplying 38836845 by its sum of digits (45), we get a square (1747658025 = 41805²).

38836845 divided by its sum of digits (45) gives a square (863041 = 929²).

The spelling of 38836845 in words is "thirty-eight million, eight hundred thirty-six thousand, eight hundred forty-five".