20545030 has 16 divisors (see below), whose sum is σ = 40343184. Its totient is φ = 7470880.

The previous prime is 20545001. The next prime is 20545037. The reversal of 20545030 is 3054502.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20544989 and 20545007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20545037) 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, 93277 + ... + 93496.

It is an arithmetic number, because the mean of its divisors is an integer number (2521449).

Almost surely, 2^20545030 is an apocalyptic number.

20545030 is a deficient number, since it is larger than the sum of its proper divisors (19798154).

20545030 is a wasteful number, since it uses less digits than its factorization.

20545030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186791.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 20545030 is about 4532.6625729255. The cubic root of 20545030 is about 273.8854281499.

Adding to 20545030 its reverse (3054502), we get a palindrome (23599532).

The spelling of 20545030 in words is "twenty million, five hundred forty-five thousand, thirty".