20852833 has 4 divisors (see below), whose sum is σ = 20862208. Its totient is φ = 20843460.

The previous prime is 20852831. The next prime is 20852849. The reversal of 20852833 is 33825802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20852833 - 2¹ = 20852831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20852795 and 20852804.

It is not an unprimeable number, because it can be changed into a prime (20852831) 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 3 ways as a sum of consecutive naturals, for example, 760 + ... + 6502.

It is an arithmetic number, because the mean of its divisors is an integer number (5215552).

Almost surely, 2^20852833 is an apocalyptic number.

It is an amenable number.

20852833 is a deficient number, since it is larger than the sum of its proper divisors (9375).

20852833 is an equidigital number, since it uses as much as digits as its factorization.

20852833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9374.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 20852833 is about 4566.4902277351. The cubic root of 20852833 is about 275.2464259451.

The spelling of 20852833 in words is "twenty million, eight hundred fifty-two thousand, eight hundred thirty-three".