20418282 has 24 divisors (see below), whose sum is σ = 44478720. Its totient is φ = 6769320.

The previous prime is 20418253. The next prime is 20418283. The reversal of 20418282 is 28281402.

It is not an unprimeable number, because it can be changed into a prime (20418283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469 + ... + 6407.

It is an arithmetic number, because the mean of its divisors is an integer number (1853280).

Almost surely, 2^20418282 is an apocalyptic number.

20418282 is an abundant number, since it is smaller than the sum of its proper divisors (24060438).

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

20418282 is a wasteful number, since it uses less digits than its factorization.

20418282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6138 (or 6135 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 20418282 is about 4518.6593144427. The cubic root of 20418282 is about 273.3210408247.

Adding to 20418282 its reverse (28281402), we get a palindrome (48699684).

The spelling of 20418282 in words is "twenty million, four hundred eighteen thousand, two hundred eighty-two".