20849323 has 8 divisors (see below), whose sum is σ = 22784256. Its totient is φ = 18921000.

The previous prime is 20849321. The next prime is 20849399. The reversal of 20849323 is 32394802.

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 20849323 - 2¹ = 20849321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20849321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6898 + ... + 9448.

It is an arithmetic number, because the mean of its divisors is an integer number (2848032).

Almost surely, 2^20849323 is an apocalyptic number.

20849323 is a deficient number, since it is larger than the sum of its proper divisors (1934933).

20849323 is a wasteful number, since it uses less digits than its factorization.

20849323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20849323 is about 4566.1058901432. The cubic root of 20849323 is about 275.2309816940.

The spelling of 20849323 in words is "twenty million, eight hundred forty-nine thousand, three hundred twenty-three".