102909308 has 12 divisors (see below), whose sum is σ = 180534480. Its totient is φ = 51328032.

The previous prime is 102909307. The next prime is 102909311. The reversal of 102909308 is 803909201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102909307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29816 + ... + 33087.

It is an arithmetic number, because the mean of its divisors is an integer number (15044540).

Almost surely, 2^102909308 is an apocalyptic number.

It is an amenable number.

102909308 is a deficient number, since it is larger than the sum of its proper divisors (77625172).

102909308 is a wasteful number, since it uses less digits than its factorization.

102909308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63316 (or 63314 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 102909308 is about 10144.4225069740. The cubic root of 102909308 is about 468.6171940689.

The spelling of 102909308 in words is "one hundred two million, nine hundred nine thousand, three hundred eight".