20361104 has 20 divisors (see below), whose sum is σ = 41770764. Its totient is φ = 9581568.

The previous prime is 20361101. The next prime is 20361109. The reversal of 20361104 is 40116302.

It can be written as a sum of positive squares in 2 ways, for example, as 8111104 + 12250000 = 2848^2 + 3500^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (20361101) by changing a digit.

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, 37157 + ... + 37700.

Almost surely, 2^20361104 is an apocalyptic number.

It is an amenable number.

20361104 is an abundant number, since it is smaller than the sum of its proper divisors (21409660).

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

20361104 is a wasteful number, since it uses less digits than its factorization.

20361104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74882 (or 74876 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20361104 is about 4512.3280022622. The cubic root of 20361104 is about 273.0656722774.

Adding to 20361104 its reverse (40116302), we get a palindrome (60477406).

The spelling of 20361104 in words is "twenty million, three hundred sixty-one thousand, one hundred four".