102008644 has 12 divisors (see below), whose sum is σ = 187910800. Its totient is φ = 48319848.

The previous prime is 102008633. The next prime is 102008651. The reversal of 102008644 is 446800201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671034 + ... + 671185.

Almost surely, 2^102008644 is an apocalyptic number.

It is an amenable number.

102008644 is a deficient number, since it is larger than the sum of its proper divisors (85902156).

102008644 is a wasteful number, since it uses less digits than its factorization.

102008644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342242 (or 1342240 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 102008644 is about 10099.9328710640. The cubic root of 102008644 is about 467.2460710279.

Adding to 102008644 its reverse (446800201), we get a palindrome (548808845).

The spelling of 102008644 in words is "one hundred two million, eight thousand, six hundred forty-four".