20842850 has 96 divisors (see below), whose sum is σ = 48854016. Its totient is φ = 6451200.

The previous prime is 20842847. The next prime is 20842873. The reversal of 20842850 is 5824802.

It is a super-2 number, since 2×20842850² = 868848792245000, which contains 22 as substring.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 184394 + ... + 184506.

It is an arithmetic number, because the mean of its divisors is an integer number (508896).

Almost surely, 2^20842850 is an apocalyptic number.

20842850 is an abundant number, since it is smaller than the sum of its proper divisors (28011166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20842850 is a wasteful number, since it uses less digits than its factorization.

20842850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 20842850 is about 4565.3970254513. The cubic root of 20842850 is about 275.2024954845.

The spelling of 20842850 in words is "twenty million, eight hundred forty-two thousand, eight hundred fifty".