21339482 has 16 divisors (see below), whose sum is σ = 32589000. Its totient is φ = 10478400.

The previous prime is 21339473. The next prime is 21339497. The reversal of 21339482 is 28493312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16008001 + 5331481 = 4001^2 + 2309^2 .

It is an unprimeable number.

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, 29744 + ... + 30452.

Almost surely, 2^21339482 is an apocalyptic number.

21339482 is a deficient number, since it is larger than the sum of its proper divisors (11249518).

21339482 is a wasteful number, since it uses less digits than its factorization.

21339482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its digits is 10368, while the sum is 32.

The square root of 21339482 is about 4619.4677182550. The cubic root of 21339482 is about 277.3711524767.

The spelling of 21339482 in words is "twenty-one million, three hundred thirty-nine thousand, four hundred eighty-two".