12010644 has 72 divisors (see below), whose sum is σ = 31868928. Its totient is φ = 3810240.

The previous prime is 12010633. The next prime is 12010651. The reversal of 12010644 is 44601021.

12010644 is a `hidden beast` number, since 1 + 20 + 1 + 0 + 644 = 666.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94509 + ... + 94635.

It is an arithmetic number, because the mean of its divisors is an integer number (442624).

Almost surely, 2^12010644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12010644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15934464).

12010644 is an abundant number, since it is smaller than the sum of its proper divisors (19858284).

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

12010644 is a wasteful number, since it uses less digits than its factorization.

12010644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 240 counting only the distinct ones).

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

The square root of 12010644 is about 3465.6376036741. The cubic root of 12010644 is about 229.0105192755.

Adding to 12010644 its reverse (44601021), we get a palindrome (56611665).

The spelling of 12010644 in words is "twelve million, ten thousand, six hundred forty-four".