20365630 has 16 divisors (see below), whose sum is σ = 36720864. Its totient is φ = 8132320.

The previous prime is 20365601. The next prime is 20365633. The reversal of 20365630 is 3656302.

It is a junction number, because it is equal to n+sod(n) for n = 20365595 and 20365604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20365633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6060 + ... + 8800.

It is an arithmetic number, because the mean of its divisors is an integer number (2295054).

Almost surely, 2^20365630 is an apocalyptic number.

20365630 is a deficient number, since it is larger than the sum of its proper divisors (16355234).

20365630 is a wasteful number, since it uses less digits than its factorization.

20365630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 20365630 is about 4512.8294893559. The cubic root of 20365630 is about 273.0859037225.

The spelling of 20365630 in words is "twenty million, three hundred sixty-five thousand, six hundred thirty".