38388857 has 6 divisors (see below), whose sum is σ = 41569182. Its totient is φ = 35435712.

The previous prime is 38388851. The next prime is 38388871. The reversal of 38388857 is 75888383.

It can be written as a sum of positive squares in 3 ways, for example, as 885481 + 37503376 = 941^2 + 6124^2 .

It is not a de Polignac number, because 38388857 - 2⁶ = 38388793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38388851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113408 + ... + 113745.

It is an arithmetic number, because the mean of its divisors is an integer number (6928197).

Almost surely, 2^38388857 is an apocalyptic number.

It is an amenable number.

38388857 is a deficient number, since it is larger than the sum of its proper divisors (3180325).

38388857 is a wasteful number, since it uses less digits than its factorization.

38388857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227179 (or 227166 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The square root of 38388857 is about 6195.8741917505. The cubic root of 38388857 is about 337.3404297338.

The spelling of 38388857 in words is "thirty-eight million, three hundred eighty-eight thousand, eight hundred fifty-seven".