20846418 has 32 divisors (see below), whose sum is σ = 45014400. Its totient is φ = 6416256.

The previous prime is 20846417. The next prime is 20846431. The reversal of 20846418 is 81464802.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20846417) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1398 + ... + 6606.

It is an arithmetic number, because the mean of its divisors is an integer number (1406700).

Almost surely, 2^20846418 is an apocalyptic number.

20846418 is an abundant number, since it is smaller than the sum of its proper divisors (24167982).

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

20846418 is a wasteful number, since it uses less digits than its factorization.

20846418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 20846418 is about 4565.7877743058. The cubic root of 20846418 is about 275.2181981752.

The spelling of 20846418 in words is "twenty million, eight hundred forty-six thousand, four hundred eighteen".