20606312 has 16 divisors (see below), whose sum is σ = 40909860. Its totient is φ = 9697024.

The previous prime is 20606309. The next prime is 20606357. The reversal of 20606312 is 21360602.

It can be written as a sum of positive squares in 2 ways, for example, as 15792676 + 4813636 = 3974^2 + 2194^2 .

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 3 ways as a sum of consecutive naturals, for example, 75623 + ... + 75894.

Almost surely, 2^20606312 is an apocalyptic number.

It is an amenable number.

20606312 is a deficient number, since it is larger than the sum of its proper divisors (20303548).

20606312 is a wasteful number, since it uses less digits than its factorization.

20606312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151540 (or 151536 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20606312 is about 4539.4175837876. The cubic root of 20606312 is about 274.1574742573.

Adding to 20606312 its reverse (21360602), we get a palindrome (41966914).

The spelling of 20606312 in words is "twenty million, six hundred six thousand, three hundred twelve".