20005850 has 24 divisors (see below), whose sum is σ = 38414208. Its totient is φ = 7743600.

The previous prime is 20005849. The next prime is 20005861. The reversal of 20005850 is 5850002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4904 + ... + 8003.

It is an arithmetic number, because the mean of its divisors is an integer number (1600592).

Almost surely, 2^20005850 is an apocalyptic number.

20005850 is a deficient number, since it is larger than the sum of its proper divisors (18408358).

20005850 is a wasteful number, since it uses less digits than its factorization.

20005850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12950 (or 12945 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 20005850 is about 4472.7899570626. The cubic root of 20005850 is about 271.4682246513.

Adding to 20005850 its reverse (5850002), we get a palindrome (25855852).

The spelling of 20005850 in words is "twenty million, five thousand, eight hundred fifty".