102809086 has 8 divisors (see below), whose sum is σ = 155066184. Its totient is φ = 51120360.

The previous prime is 102809071. The next prime is 102809101. The reversal of 102809086 is 680908201.

It is an interprime number because it is at equal distance from previous prime (102809071) and next prime (102809101).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141640 + ... + 142363.

It is an arithmetic number, because the mean of its divisors is an integer number (19383273).

Almost surely, 2^102809086 is an apocalyptic number.

102809086 is a deficient number, since it is larger than the sum of its proper divisors (52257098).

102809086 is a wasteful number, since it uses less digits than its factorization.

102809086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284186.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 102809086 is about 10139.4815449312. The cubic root of 102809086 is about 468.4650179829.

The spelling of 102809086 in words is "one hundred two million, eight hundred nine thousand, eighty-six".