102030444 has 18 divisors (see below), whose sum is σ = 257910380. Its totient is φ = 34010136.

The previous prime is 102030407. The next prime is 102030449. The reversal of 102030444 is 444030201.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (102030449) 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 5 ways as a sum of consecutive naturals, for example, 1417054 + ... + 1417125.

Almost surely, 2^102030444 is an apocalyptic number.

It is an amenable number.

102030444 is an abundant number, since it is smaller than the sum of its proper divisors (155879936).

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

102030444 is a wasteful number, since it uses less digits than its factorization.

102030444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834189 (or 2834184 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 102030444 is about 10101.0120285049. The cubic root of 102030444 is about 467.2793533016.

Adding to 102030444 its reverse (444030201), we get a palindrome (546060645).

The spelling of 102030444 in words is "one hundred two million, thirty thousand, four hundred forty-four".