21344035 has 8 divisors (see below), whose sum is σ = 25770960. Its totient is φ = 16969824.

The previous prime is 21344033. The next prime is 21344051. The reversal of 21344035 is 53044312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21344035 - 2¹ = 21344033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21343997 and 21344015.

It is not an unprimeable number, because it can be changed into a prime (21344033) 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, 12280 + ... + 13909.

It is an arithmetic number, because the mean of its divisors is an integer number (3221370).

Almost surely, 2^21344035 is an apocalyptic number.

21344035 is a deficient number, since it is larger than the sum of its proper divisors (4426925).

21344035 is a wasteful number, since it uses less digits than its factorization.

21344035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26357.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 21344035 is about 4619.9604976666. The cubic root of 21344035 is about 277.3908777455.

Adding to 21344035 its reverse (53044312), we get a palindrome (74388347).

The spelling of 21344035 in words is "twenty-one million, three hundred forty-four thousand, thirty-five".