20664482 has 16 divisors (see below), whose sum is σ = 31819392. Its totient is φ = 10061520.

The previous prime is 20664473. The next prime is 20664509. The reversal of 20664482 is 28446602.

It is a happy number.

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 in 7 ways as a sum of consecutive naturals, for example, 12263 + ... + 13845.

It is an arithmetic number, because the mean of its divisors is an integer number (1988712).

Almost surely, 2^20664482 is an apocalyptic number.

20664482 is a deficient number, since it is larger than the sum of its proper divisors (11154910).

20664482 is a wasteful number, since it uses less digits than its factorization.

20664482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 20664482 is about 4545.8202780136. The cubic root of 20664482 is about 274.4152068938.

The spelling of 20664482 in words is "twenty million, six hundred sixty-four thousand, four hundred eighty-two".