20163630 has 32 divisors (see below), whose sum is σ = 48543264. Its totient is φ = 5360256.

The previous prime is 20163629. The next prime is 20163641. The reversal of 20163630 is 3636102.

It is a junction number, because it is equal to n+sod(n) for n = 20163597 and 20163606.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11064 + ... + 12756.

It is an arithmetic number, because the mean of its divisors is an integer number (1516977).

Almost surely, 2^20163630 is an apocalyptic number.

20163630 is an abundant number, since it is smaller than the sum of its proper divisors (28379634).

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

20163630 is a wasteful number, since it uses less digits than its factorization.

20163630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 20163630 is about 4490.3930785623. The cubic root of 20163630 is about 272.1800188789.

Adding to 20163630 its reverse (3636102), we get a palindrome (23799732).

The spelling of 20163630 in words is "twenty million, one hundred sixty-three thousand, six hundred thirty".