38822857 has 4 divisors (see below), whose sum is σ = 39179140. Its totient is φ = 38466576.

The previous prime is 38822843. The next prime is 38822867. The reversal of 38822857 is 75822883.

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 25361296 + 13461561 = 5036^2 + 3669^2 .

It is a cyclic number.

It is not a de Polignac number, because 38822857 - 2²³ = 30434249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38822807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177978 + ... + 178195.

It is an arithmetic number, because the mean of its divisors is an integer number (9794785).

Almost surely, 2^38822857 is an apocalyptic number.

It is an amenable number.

38822857 is a deficient number, since it is larger than the sum of its proper divisors (356283).

38822857 is a wasteful number, since it uses less digits than its factorization.

38822857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356282.

The product of its digits is 215040, while the sum is 43.

The square root of 38822857 is about 6230.7990659305. The cubic root of 38822857 is about 338.6069210530.

The spelling of 38822857 in words is "thirty-eight million, eight hundred twenty-two thousand, eight hundred fifty-seven".