20544898 has 16 divisors (see below), whose sum is σ = 34047360. Its totient is φ = 9219600.

The previous prime is 20544889. The next prime is 20544899. The reversal of 20544898 is 89844502.

It is a self number, because there is not a number n which added to its sum of digits gives 20544898.

It is not an unprimeable number, because it can be changed into a prime (20544899) 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 7 ways as a sum of consecutive naturals, for example, 4173 + ... + 7648.

It is an arithmetic number, because the mean of its divisors is an integer number (2127960).

Almost surely, 2^20544898 is an apocalyptic number.

20544898 is a deficient number, since it is larger than the sum of its proper divisors (13502462).

20544898 is a wasteful number, since it uses less digits than its factorization.

20544898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11913.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 20544898 is about 4532.6480119242. The cubic root of 20544898 is about 273.8848415854.

The spelling of 20544898 in words is "twenty million, five hundred forty-four thousand, eight hundred ninety-eight".