20010436 has 12 divisors (see below), whose sum is σ = 35054460. Its totient is φ = 9994880.

The previous prime is 20010409. The next prime is 20010443. The reversal of 20010436 is 63401002.

It can be written as a sum of positive squares in 2 ways, for example, as 14516100 + 5494336 = 3810^2 + 2344^2 .

It is an unprimeable number.

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, 3216 + ... + 7096.

It is an arithmetic number, because the mean of its divisors is an integer number (2921205).

Almost surely, 2^20010436 is an apocalyptic number.

It is an amenable number.

20010436 is a deficient number, since it is larger than the sum of its proper divisors (15044024).

20010436 is a wasteful number, since it uses less digits than its factorization.

20010436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174 (or 5172 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20010436 is about 4473.3025831035. The cubic root of 20010436 is about 271.4889662204.

Adding to 20010436 its reverse (63401002), we get a palindrome (83411438).

The spelling of 20010436 in words is "twenty million, ten thousand, four hundred thirty-six".