10102644 has 30 divisors (see below), whose sum is σ = 26411154. Its totient is φ = 3367440.

The previous prime is 10102639. The next prime is 10102663. The reversal of 10102644 is 44620101.

10102644 is a `hidden beast` number, since 10 + 10 + 2 + 644 = 666.

10102644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5817744 + 4284900 = 2412^2 + 2070^2 .

It is a super-3 number, since 3×10102644³ (a number of 22 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15267 + ... + 15914.

Almost surely, 2^10102644 is an apocalyptic number.

It is an amenable number.

10102644 is an abundant number, since it is smaller than the sum of its proper divisors (16308510).

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

10102644 is a wasteful number, since it uses less digits than its factorization.

10102644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31197 (or 31186 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 10102644 is about 3178.4656675824. The cubic root of 10102644 is about 216.1780938605.

Adding to 10102644 its reverse (44620101), we get a palindrome (54722745).

The spelling of 10102644 in words is "ten million, one hundred two thousand, six hundred forty-four".