102181436 has 12 divisors (see below), whose sum is σ = 204362928. Its totient is φ = 43792032.

The previous prime is 102181427. The next prime is 102181447. The reversal of 102181436 is 634181201.

102181436 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 1824641 + ... + 1824696.

It is an arithmetic number, because the mean of its divisors is an integer number (17030244).

Almost surely, 2^102181436 is an apocalyptic number.

It is an amenable number.

102181436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

102181436 is a wasteful number, since it uses less digits than its factorization.

102181436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649348 (or 3649346 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 102181436 is about 10108.4833679440. The cubic root of 102181436 is about 467.5097442372.

The spelling of 102181436 in words is "one hundred two million, one hundred eighty-one thousand, four hundred thirty-six".