20300030 has 16 divisors (see below), whose sum is σ = 38129184. Its totient is φ = 7766880.

The previous prime is 20300017. The next prime is 20300039. The reversal of 20300030 is 3000302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20299990 and 20300017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43901 + ... + 44360.

It is an arithmetic number, because the mean of its divisors is an integer number (2383074).

Almost surely, 2^20300030 is an apocalyptic number.

20300030 is a deficient number, since it is larger than the sum of its proper divisors (17829154).

20300030 is a wasteful number, since it uses less digits than its factorization.

20300030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88291.

The product of its (nonzero) digits is 18, while the sum is 8.

The square root of 20300030 is about 4505.5554596520. Note that the first 3 decimals coincide. The cubic root of 20300030 is about 272.7923747951.

Adding to 20300030 its reverse (3000302), we get a palindrome (23300332).

The spelling of 20300030 in words is "twenty million, three hundred thousand, thirty".