20839852 has 12 divisors (see below), whose sum is σ = 39785256. Its totient is φ = 9472640.

The previous prime is 20839829. The next prime is 20839867. The reversal of 20839852 is 25893802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236773 + ... + 236860.

It is an arithmetic number, because the mean of its divisors is an integer number (3315438).

Almost surely, 2^20839852 is an apocalyptic number.

20839852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20839852 is a deficient number, since it is larger than the sum of its proper divisors (18945404).

20839852 is a wasteful number, since it uses less digits than its factorization.

20839852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473648 (or 473646 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 20839852 is about 4565.0686741822. The cubic root of 20839852 is about 275.1892999659.

It can be divided in two parts, 2083 and 9852, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 20839852 in words is "twenty million, eight hundred thirty-nine thousand, eight hundred fifty-two".