102308857 has 8 divisors (see below), whose sum is σ = 117000000. Its totient is φ = 87636624.

The previous prime is 102308837. The next prime is 102308881. The reversal of 102308857 is 758803201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102308857 - 2⁷ = 102308729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102308827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9894 + ... + 17392.

It is an arithmetic number, because the mean of its divisors is an integer number (14625000).

Almost surely, 2^102308857 is an apocalyptic number.

It is an amenable number.

102308857 is a deficient number, since it is larger than the sum of its proper divisors (14691143).

102308857 is an equidigital number, since it uses as much as digits as its factorization.

102308857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9455.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 102308857 is about 10114.7840807404. The cubic root of 102308857 is about 467.7039928762.

The spelling of 102308857 in words is "one hundred two million, three hundred eight thousand, eight hundred fifty-seven".