20302030 has 64 divisors (see below), whose sum is σ = 44115840. Its totient is φ = 6580224.

The previous prime is 20302027. The next prime is 20302067. The reversal of 20302030 is 3020302.

20302030 = T₁₃₈₀ + T₁₃₈₁ + ... + T₁₄₀₀.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20301998 and 20302016.

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 31 ways as a sum of consecutive naturals, for example, 148122 + ... + 148258.

It is an arithmetic number, because the mean of its divisors is an integer number (689310).

Almost surely, 2^20302030 is an apocalyptic number.

20302030 is an abundant number, since it is smaller than the sum of its proper divisors (23813810).

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

20302030 is a wasteful number, since it uses less digits than its factorization.

20302030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 20302030 is about 4505.7774024024. Note that the first 3 decimals coincide. The cubic root of 20302030 is about 272.8013331864.

Adding to 20302030 its reverse (3020302), we get a palindrome (23322332).

The spelling of 20302030 in words is "twenty million, three hundred two thousand, thirty".