21362324 has 12 divisors (see below), whose sum is σ = 37482900. Its totient is φ = 10652928.

The previous prime is 21362323. The next prime is 21362329. The reversal of 21362324 is 42326312.

It can be written as a sum of positive squares in 2 ways, for example, as 6400900 + 14961424 = 2530^2 + 3868^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21362324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21362323) 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 3 ways as a sum of consecutive naturals, for example, 5309 + ... + 8420.

It is an arithmetic number, because the mean of its divisors is an integer number (3123575).

Almost surely, 2^21362324 is an apocalyptic number.

It is an amenable number.

21362324 is a deficient number, since it is larger than the sum of its proper divisors (16120576).

21362324 is a wasteful number, since it uses less digits than its factorization.

21362324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14122 (or 14120 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 21362324 is about 4621.9394197674. The cubic root of 21362324 is about 277.4700841597.

Adding to 21362324 its reverse (42326312), we get a palindrome (63688636).

The spelling of 21362324 in words is "twenty-one million, three hundred sixty-two thousand, three hundred twenty-four".