20118250 has 16 divisors (see below), whose sum is σ = 37661832. Its totient is φ = 8047200.

The previous prime is 20118229. The next prime is 20118253. The reversal of 20118250 is 5281102.

It can be written as a sum of positive squares in 4 ways, for example, as 7006609 + 13111641 = 2647^2 + 3621^2 .

It is not an unprimeable number, because it can be changed into a prime (20118253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39987 + ... + 40486.

Almost surely, 2^20118250 is an apocalyptic number.

20118250 is a deficient number, since it is larger than the sum of its proper divisors (17543582).

20118250 is an equidigital number, since it uses as much as digits as its factorization.

20118250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80490 (or 80480 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 20118250 is about 4485.3372225508. The cubic root of 20118250 is about 271.9756772513.

Adding to 20118250 its reverse (5281102), we get a palindrome (25399352).

The spelling of 20118250 in words is "twenty million, one hundred eighteen thousand, two hundred fifty".