20053630 has 32 divisors (see below), whose sum is σ = 37576224. Its totient is φ = 7698816.

The previous prime is 20053613. The next prime is 20053637. The reversal of 20053630 is 3635002.

It is a junction number, because it is equal to n+sod(n) for n = 20053598 and 20053607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20053637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30384 + ... + 31036.

It is an arithmetic number, because the mean of its divisors is an integer number (1174257).

Almost surely, 2^20053630 is an apocalyptic number.

20053630 is a deficient number, since it is larger than the sum of its proper divisors (17522594).

20053630 is a wasteful number, since it uses less digits than its factorization.

20053630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20053630 is about 4478.1279570821. The cubic root of 20053630 is about 271.6841688115.

Adding to 20053630 its reverse (3635002), we get a palindrome (23688632).

The spelling of 20053630 in words is "twenty million, fifty-three thousand, six hundred thirty".