20606384 has 10 divisors (see below), whose sum is σ = 39924900. Its totient is φ = 10303184.

The previous prime is 20606371. The next prime is 20606419. The reversal of 20606384 is 48360602.

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 as a sum of consecutive naturals, namely, 643934 + ... + 643965.

It is an arithmetic number, because the mean of its divisors is an integer number (3992490).

Almost surely, 2^20606384 is an apocalyptic number.

It is an amenable number.

20606384 is a deficient number, since it is larger than the sum of its proper divisors (19318516).

20606384 is a wasteful number, since it uses less digits than its factorization.

20606384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287907 (or 1287901 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 20606384 is about 4539.4255143135. The cubic root of 20606384 is about 274.1577935659.

Adding to 20606384 its reverse (48360602), we get a palindrome (68966986).

The spelling of 20606384 in words is "twenty million, six hundred six thousand, three hundred eighty-four".