102003640 has 32 divisors (see below), whose sum is σ = 236914560. Its totient is φ = 39484800.

The previous prime is 102003623. The next prime is 102003653. The reversal of 102003640 is 46300201.

It is a congruent number.

It is an unprimeable number.

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, 39891 + ... + 42370.

It is an arithmetic number, because the mean of its divisors is an integer number (7403580).

Almost surely, 2^102003640 is an apocalyptic number.

102003640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102003640 is an abundant number, since it is smaller than the sum of its proper divisors (134910920).

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

102003640 is a wasteful number, since it uses less digits than its factorization.

102003640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82303 (or 82299 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 102003640 is about 10099.6851436072. The cubic root of 102003640 is about 467.2384307029.

Adding to 102003640 its reverse (46300201), we get a palindrome (148303841).

The spelling of 102003640 in words is "one hundred two million, three thousand, six hundred forty".