20018298 has 8 divisors (see below), whose sum is σ = 40036608. Its totient is φ = 6672764.

The previous prime is 20018293. The next prime is 20018351. The reversal of 20018298 is 89281002.

It is a sphenic number, since it is the product of 3 distinct primes.

20018298 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20018293) 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 3 ways as a sum of consecutive naturals, for example, 1668186 + ... + 1668197.

It is an arithmetic number, because the mean of its divisors is an integer number (5004576).

Almost surely, 2^20018298 is an apocalyptic number.

20018298 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20018298 is a wasteful number, since it uses less digits than its factorization.

20018298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336388.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 20018298 is about 4474.1812658854. The cubic root of 20018298 is about 271.5245171162.

The spelling of 20018298 in words is "twenty million, eighteen thousand, two hundred ninety-eight".