21474322 has 4 divisors (see below), whose sum is σ = 32211486. Its totient is φ = 10737160.

The previous prime is 21474293. The next prime is 21474353. The reversal of 21474322 is 22347412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12895281 + 8579041 = 3591^2 + 2929^2 .

It is a super-2 number, since 2×21474322² = 922293010719368, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 5368579 + ... + 5368582.

Almost surely, 2^21474322 is an apocalyptic number.

21474322 is a deficient number, since it is larger than the sum of its proper divisors (10737164).

21474322 is a wasteful number, since it uses less digits than its factorization.

21474322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10737163.

The product of its digits is 2688, while the sum is 25.

The square root of 21474322 is about 4634.0394905525. The cubic root of 21474322 is about 277.9541442230.

The spelling of 21474322 in words is "twenty-one million, four hundred seventy-four thousand, three hundred twenty-two".