20118282 has 8 divisors (see below), whose sum is σ = 40236576. Its totient is φ = 6706092.

The previous prime is 20118253. The next prime is 20118299. The reversal of 20118282 is 28281102.

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

20118282 is an admirable number.

It is an unprimeable number.

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, 1676518 + ... + 1676529.

It is an arithmetic number, because the mean of its divisors is an integer number (5029572).

Almost surely, 2^20118282 is an apocalyptic number.

20118282 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.

20118282 is a wasteful number, since it uses less digits than its factorization.

20118282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353052.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 20118282 is about 4485.3407897282. The cubic root of 20118282 is about 271.9758214523.

Adding to 20118282 its reverse (28281102), we get a palindrome (48399384).

Subtracting 20118282 from its reverse (28281102), we obtain a triangular number (8162820 = T₄₀₄₀).

The spelling of 20118282 in words is "twenty million, one hundred eighteen thousand, two hundred eighty-two".