38857345 has 4 divisors (see below), whose sum is σ = 46628820. Its totient is φ = 31085872.

The previous prime is 38857333. The next prime is 38857349. The reversal of 38857345 is 54375883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14493249 + 24364096 = 3807^2 + 4936^2 .

It is a cyclic number.

It is not a de Polignac number, because 38857345 - 2⁹ = 38856833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38857349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3885730 + ... + 3885739.

It is an arithmetic number, because the mean of its divisors is an integer number (11657205).

Almost surely, 2^38857345 is an apocalyptic number.

It is an amenable number.

38857345 is a deficient number, since it is larger than the sum of its proper divisors (7771475).

38857345 is an equidigital number, since it uses as much as digits as its factorization.

38857345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7771474.

The product of its digits is 403200, while the sum is 43.

The square root of 38857345 is about 6233.5659938754. The cubic root of 38857345 is about 338.7071577015.

The spelling of 38857345 in words is "thirty-eight million, eight hundred fifty-seven thousand, three hundred forty-five".