20855024 has 10 divisors (see below), whose sum is σ = 40406640. Its totient is φ = 10427504.

The previous prime is 20855017. The next prime is 20855041. The reversal of 20855024 is 42055802.

It is a junction number, because it is equal to n+sod(n) for n = 20854984 and 20855002.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 651704 + ... + 651735.

It is an arithmetic number, because the mean of its divisors is an integer number (4040664).

Almost surely, 2^20855024 is an apocalyptic number.

It is an amenable number.

20855024 is a deficient number, since it is larger than the sum of its proper divisors (19551616).

20855024 is a wasteful number, since it uses less digits than its factorization.

20855024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303447 (or 1303441 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 20855024 is about 4566.7301212136. The cubic root of 20855024 is about 275.2560656233.

The spelling of 20855024 in words is "twenty million, eight hundred fifty-five thousand, twenty-four".