20946323 has 4 divisors (see below), whose sum is σ = 21668640. Its totient is φ = 20224008.

The previous prime is 20946319. The next prime is 20946347. The reversal of 20946323 is 32364902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20946323 - 2² = 20946319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 722287 = 20946323 / (2 + 0 + 9 + 4 + 6 + 3 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20946313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361115 + ... + 361172.

It is an arithmetic number, because the mean of its divisors is an integer number (5417160).

Almost surely, 2^20946323 is an apocalyptic number.

20946323 is a deficient number, since it is larger than the sum of its proper divisors (722317).

20946323 is an equidigital number, since it uses as much as digits as its factorization.

20946323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722316.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 20946323 is about 4576.7153068549. The cubic root of 20946323 is about 275.6571523553.

The spelling of 20946323 in words is "twenty million, nine hundred forty-six thousand, three hundred twenty-three".