38831745 has 16 divisors (see below), whose sum is σ = 62282880. Its totient is φ = 20659584.

The previous prime is 38831743. The next prime is 38831789. The reversal of 38831745 is 54713883.

It is not a de Polignac number, because 38831745 - 2¹ = 38831743 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38831743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3637 + ... + 9533.

It is an arithmetic number, because the mean of its divisors is an integer number (3892680).

Almost surely, 2^38831745 is an apocalyptic number.

It is an amenable number.

38831745 is a deficient number, since it is larger than the sum of its proper divisors (23451135).

38831745 is a wasteful number, since it uses less digits than its factorization.

38831745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6344.

The product of its digits is 80640, while the sum is 39.

The square root of 38831745 is about 6231.5122562665. The cubic root of 38831745 is about 338.6327589992.

The spelling of 38831745 in words is "thirty-eight million, eight hundred thirty-one thousand, seven hundred forty-five".