20854318 has 4 divisors (see below), whose sum is σ = 31281480. Its totient is φ = 10427158.

The previous prime is 20854313. The next prime is 20854319. The reversal of 20854318 is 81345802.

20854318 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 20854318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20854313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5213578 + ... + 5213581.

It is an arithmetic number, because the mean of its divisors is an integer number (7820370).

Almost surely, 2^20854318 is an apocalyptic number.

20854318 is a deficient number, since it is larger than the sum of its proper divisors (10427162).

20854318 is a wasteful number, since it uses less digits than its factorization.

20854318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10427161.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 20854318 is about 4566.6528223634. The cubic root of 20854318 is about 275.2529595296.

The spelling of 20854318 in words is "twenty million, eight hundred fifty-four thousand, three hundred eighteen".