102185500 has 24 divisors (see below), whose sum is σ = 223174224. Its totient is φ = 40874000.

The previous prime is 102185497. The next prime is 102185507. The reversal of 102185500 is 5581201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102185507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101686 + ... + 102685.

It is an arithmetic number, because the mean of its divisors is an integer number (9298926).

Almost surely, 2^102185500 is an apocalyptic number.

102185500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102185500 is an abundant number, since it is smaller than the sum of its proper divisors (120988724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102185500 is a wasteful number, since it uses less digits than its factorization.

102185500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204390 (or 204378 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 102185500 is about 10108.6843852205. The cubic root of 102185500 is about 467.5159421485.

The spelling of 102185500 in words is "one hundred two million, one hundred eighty-five thousand, five hundred".