20323516 has 6 divisors (see below), whose sum is σ = 35566160. Its totient is φ = 10161756.

The previous prime is 20323489. The next prime is 20323529. The reversal of 20323516 is 61532302.

20323516 is nontrivially palindromic in base 15.

It is a congruent number.

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, 2540436 + ... + 2540443.

Almost surely, 2^20323516 is an apocalyptic number.

It is an amenable number.

20323516 is a deficient number, since it is larger than the sum of its proper divisors (15242644).

20323516 is a wasteful number, since it uses less digits than its factorization.

20323516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080883 (or 5080881 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 20323516 is about 4508.1610441509. The cubic root of 20323516 is about 272.8975360934.

Adding to 20323516 its reverse (61532302), we get a palindrome (81855818).

The spelling of 20323516 in words is "twenty million, three hundred twenty-three thousand, five hundred sixteen".