20218294 has 8 divisors (see below), whose sum is σ = 30485160. Its totient is φ = 10056576.

The previous prime is 20218291. The next prime is 20218313. The reversal of 20218294 is 49281202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20218291) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 25804 + ... + 26575.

It is an arithmetic number, because the mean of its divisors is an integer number (3810645).

Almost surely, 2^20218294 is an apocalyptic number.

20218294 is a deficient number, since it is larger than the sum of its proper divisors (10266866).

20218294 is a wasteful number, since it uses less digits than its factorization.

20218294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52574.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 20218294 is about 4496.4757310587. The cubic root of 20218294 is about 272.4257587500.

Adding to 20218294 its reverse (49281202), we get a palindrome (69499496).

It can be divided in two parts, 202 and 18294, that added together give a square (18496 = 136²).

The spelling of 20218294 in words is "twenty million, two hundred eighteen thousand, two hundred ninety-four".