41221664 has 48 divisors (see below), whose sum is σ = 89159616. Its totient is φ = 18604800.

The previous prime is 41221633. The next prime is 41221667. The reversal of 41221664 is 46612214.

41221664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (41221667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63389 + ... + 64035.

It is an arithmetic number, because the mean of its divisors is an integer number (1857492).

Almost surely, 2^41221664 is an apocalyptic number.

41221664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 41221664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44579808).

41221664 is an abundant number, since it is smaller than the sum of its proper divisors (47937952).

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

41221664 is a wasteful number, since it uses less digits than its factorization.

41221664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 841 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 41221664 is about 6420.4099557583. The cubic root of 41221664 is about 345.4420267099.

Adding to 41221664 its reverse (46612214), we get a palindrome (87833878).

The spelling of 41221664 in words is "forty-one million, two hundred twenty-one thousand, six hundred sixty-four".