20053736 has 8 divisors (see below), whose sum is σ = 37600770. Its totient is φ = 10026864.

The previous prime is 20053717. The next prime is 20053763. The reversal of 20053736 is 63735002.

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 7873636 = 3490^2 + 2806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253351 + ... + 1253366.

Almost surely, 2^20053736 is an apocalyptic number.

It is an amenable number.

20053736 is a deficient number, since it is larger than the sum of its proper divisors (17547034).

20053736 is a wasteful number, since it uses less digits than its factorization.

20053736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506723 (or 2506719 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 20053736 is about 4478.1397923691. The cubic root of 20053736 is about 271.6846475024.

Adding to 20053736 its reverse (63735002), we get a palindrome (83788738).

The spelling of 20053736 in words is "twenty million, fifty-three thousand, seven hundred thirty-six".