20353318 has 16 divisors (see below), whose sum is σ = 32651424. Its totient is φ = 9481600.

The previous prime is 20353283. The next prime is 20353373. The reversal of 20353318 is 81335302.

It is a junction number, because it is equal to n+sod(n) for n = 20353292 and 20353301.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 471 + ... + 6397.

It is an arithmetic number, because the mean of its divisors is an integer number (2040714).

Almost surely, 2^20353318 is an apocalyptic number.

20353318 is a deficient number, since it is larger than the sum of its proper divisors (12298106).

20353318 is a wasteful number, since it uses less digits than its factorization.

20353318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6047.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20353318 is about 4511.4651722029. The cubic root of 20353318 is about 273.0308614541.

The spelling of 20353318 in words is "twenty million, three hundred fifty-three thousand, three hundred eighteen".