10009644 has 12 divisors (see below), whose sum is σ = 23355864. Its totient is φ = 3336544.

The previous prime is 10009627. The next prime is 10009679. The reversal of 10009644 is 44690001.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417057 + ... + 417080.

It is an arithmetic number, because the mean of its divisors is an integer number (1946322).

Almost surely, 2^10009644 is an apocalyptic number.

It is an amenable number.

10009644 is an abundant number, since it is smaller than the sum of its proper divisors (13346220).

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

10009644 is a wasteful number, since it uses less digits than its factorization.

10009644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834144 (or 834142 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 10009644 is about 3163.8021429919. The cubic root of 10009644 is about 215.5127046448.

Adding to 10009644 its reverse (44690001), we get a palindrome (54699645).

The spelling of 10009644 in words is "ten million, nine thousand, six hundred forty-four".