10213644 has 24 divisors (see below), whose sum is σ = 27236608. Its totient is φ = 2918160.

The previous prime is 10213639. The next prime is 10213669. The reversal of 10213644 is 44631201.

10213644 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 10213644.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60712 + ... + 60879.

Almost surely, 2^10213644 is an apocalyptic number.

10213644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10213644 is an abundant number, since it is smaller than the sum of its proper divisors (17022964).

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

10213644 is a wasteful number, since it uses less digits than its factorization.

10213644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121605 (or 121603 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 10213644 is about 3195.8792217479. The cubic root of 10213644 is about 216.9669440753.

Adding to 10213644 its reverse (44631201), we get a palindrome (54844845).

The spelling of 10213644 in words is "ten million, two hundred thirteen thousand, six hundred forty-four".