10008857 has 4 divisors (see below), whose sum is σ = 10354020. Its totient is φ = 9663696.

The previous prime is 10008853. The next prime is 10008881. The reversal of 10008857 is 75880001.

It is a happy number.

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 2062096 + 7946761 = 1436^2 + 2819^2 .

It is a cyclic number.

It is not a de Polignac number, because 10008857 - 2² = 10008853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 345133 = 10008857 / (1 + 0 + 0 + 0 + 8 + 8 + 5 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10008853) 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, 172538 + ... + 172595.

It is an arithmetic number, because the mean of its divisors is an integer number (2588505).

Almost surely, 2^10008857 is an apocalyptic number.

It is an amenable number.

10008857 is a deficient number, since it is larger than the sum of its proper divisors (345163).

10008857 is an equidigital number, since it uses as much as digits as its factorization.

10008857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345162.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 10008857 is about 3163.6777648806. The cubic root of 10008857 is about 215.5070563273.

Adding to 10008857 its reverse (75880001), we get a palindrome (85888858).

The spelling of 10008857 in words is "ten million, eight thousand, eight hundred fifty-seven".