21411334 has 24 divisors (see below), whose sum is σ = 38236968. Its totient is φ = 8961120.

The previous prime is 21411329. The next prime is 21411337. The reversal of 21411334 is 43311412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411337) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1674 + ... + 6754.

It is an arithmetic number, because the mean of its divisors is an integer number (1593207).

Almost surely, 2^21411334 is an apocalyptic number.

21411334 is a deficient number, since it is larger than the sum of its proper divisors (16825634).

21411334 is a wasteful number, since it uses less digits than its factorization.

21411334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5140 (or 5133 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 21411334 is about 4627.2382692055. The cubic root of 21411334 is about 277.6821151241.

Adding to 21411334 its reverse (43311412), we get a palindrome (64722746).

The spelling of 21411334 in words is "twenty-one million, four hundred eleven thousand, three hundred thirty-four".