102005844 has 24 divisors (see below), whose sum is σ = 240327360. Its totient is φ = 33671424.

The previous prime is 102005843. The next prime is 102005857. The reversal of 102005844 is 448500201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102005843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40029 + ... + 42500.

It is an arithmetic number, because the mean of its divisors is an integer number (10013640).

Almost surely, 2^102005844 is an apocalyptic number.

It is an amenable number.

102005844 is an abundant number, since it is smaller than the sum of its proper divisors (138321516).

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

102005844 is a wasteful number, since it uses less digits than its factorization.

102005844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82639 (or 82637 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 102005844 is about 10099.7942553302. The cubic root of 102005844 is about 467.2417958968.

The spelling of 102005844 in words is "one hundred two million, five thousand, eight hundred forty-four".