20181152 has 24 divisors (see below), whose sum is σ = 39836916. Its totient is φ = 10063872.

The previous prime is 20181151. The next prime is 20181157. The reversal of 20181152 is 25118102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12138256 + 8042896 = 3484^2 + 2836^2 .

It is not an unprimeable number, because it can be changed into a prime (20181151) 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, 17918 + ... + 19010.

Almost surely, 2^20181152 is an apocalyptic number.

It is an amenable number.

20181152 is a deficient number, since it is larger than the sum of its proper divisors (19655764).

20181152 is a wasteful number, since it uses less digits than its factorization.

20181152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680 (or 1672 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 20181152 is about 4492.3437090232. The cubic root of 20181152 is about 272.2588366565.

Adding to 20181152 its reverse (25118102), we get a palindrome (45299254).

The spelling of 20181152 in words is "twenty million, one hundred eighty-one thousand, one hundred fifty-two".