20616323 has 8 divisors (see below), whose sum is σ = 25374048. Its totient is φ = 16311744.

The previous prime is 20616313. The next prime is 20616331. The reversal of 20616323 is 32361602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20616323 - 2¹⁰ = 20615299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20616313) by changing a digit.

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, 113186 + ... + 113367.

It is an arithmetic number, because the mean of its divisors is an integer number (3171756).

Almost surely, 2^20616323 is an apocalyptic number.

20616323 is a deficient number, since it is larger than the sum of its proper divisors (4757725).

20616323 is a wasteful number, since it uses less digits than its factorization.

20616323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226573.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20616323 is about 4540.5201243910. The cubic root of 20616323 is about 274.2018643150.

Adding to 20616323 its reverse (32361602), we get a palindrome (52977925).

The spelling of 20616323 in words is "twenty million, six hundred sixteen thousand, three hundred twenty-three".