102444644 has 12 divisors (see below), whose sum is σ = 179856768. Its totient is φ = 51057000.

The previous prime is 102444613. The next prime is 102444653. The reversal of 102444644 is 446444201.

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, 39932 + ... + 42419.

It is an arithmetic number, because the mean of its divisors is an integer number (14988064).

Almost surely, 2^102444644 is an apocalyptic number.

It is an amenable number.

102444644 is a deficient number, since it is larger than the sum of its proper divisors (77412124).

102444644 is a wasteful number, since it uses less digits than its factorization.

102444644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82666 (or 82664 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 102444644 is about 10121.4941584728. The cubic root of 102444644 is about 467.9108177400.

Adding to 102444644 its reverse (446444201), we get a palindrome (548888845).

The spelling of 102444644 in words is "one hundred two million, four hundred forty-four thousand, six hundred forty-four".