20530030 has 16 divisors (see below), whose sum is σ = 38561184. Its totient is φ = 7854880.

The previous prime is 20530021. The next prime is 20530039. The reversal of 20530030 is 3003502.

It is an interprime number because it is at equal distance from previous prime (20530021) and next prime (20530039).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530039) 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, 44401 + ... + 44860.

It is an arithmetic number, because the mean of its divisors is an integer number (2410074).

Almost surely, 2^20530030 is an apocalyptic number.

20530030 is a deficient number, since it is larger than the sum of its proper divisors (18031154).

20530030 is a wasteful number, since it uses less digits than its factorization.

20530030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89291.

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 20530030 is about 4531.0076142068. The cubic root of 20530030 is about 273.8187570109.

Adding to 20530030 its reverse (3003502), we get a palindrome (23533532).

The spelling of 20530030 in words is "twenty million, five hundred thirty thousand, thirty".