20201030 has 16 divisors (see below), whose sum is σ = 36504864. Its totient is φ = 8048640.

The previous prime is 20201029. The next prime is 20201039. The reversal of 20201030 is 3010202.

It is a super-2 number, since 2×20201030² = 816163226121800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20200999 and 20201017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201039) 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, 1211 + ... + 6470.

It is an arithmetic number, because the mean of its divisors is an integer number (2281554).

Almost surely, 2^20201030 is an apocalyptic number.

20201030 is a deficient number, since it is larger than the sum of its proper divisors (16303834).

20201030 is a wasteful number, since it uses less digits than its factorization.

20201030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7951.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 20201030 is about 4494.5555953843. Note that the first 4 decimals coincide. The cubic root of 20201030 is about 272.3481970200.

Adding to 20201030 its reverse (3010202), we get a palindrome (23211232).

The spelling of 20201030 in words is "twenty million, two hundred one thousand, thirty".