20424403233 has 24 divisors (see below), whose sum is σ = 32764993440. Its totient is φ = 12568860720.

The previous prime is 20424403199. The next prime is 20424403249. The reversal of 20424403233 is 33230442402.

20424403233 is a `hidden beast` number, since 2 + 0 + 4 + 24 + 403 + 233 = 666.

It is not a de Polignac number, because 20424403233 - 2¹³ = 20424395041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20424403197 and 20424403206.

It is not an unprimeable number, because it can be changed into a prime (20424403283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2233483 + ... + 2242608.

It is an arithmetic number, because the mean of its divisors is an integer number (1365208060).

Almost surely, 2^20424403233 is an apocalyptic number.

It is an amenable number.

20424403233 is a deficient number, since it is larger than the sum of its proper divisors (12340590207).

20424403233 is a wasteful number, since it uses less digits than its factorization.

20424403233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476126 (or 4476107 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20424403233 its reverse (33230442402), we get a palindrome (53654845635).

The spelling of 20424403233 in words is "twenty billion, four hundred twenty-four million, four hundred three thousand, two hundred thirty-three".