20430201 has 16 divisors (see below), whose sum is σ = 30078720. Its totient is φ = 12231120.

The previous prime is 20430191. The next prime is 20430251. The reversal of 20430201 is 10203402.

It is a de Polignac number, because none of the positive numbers 2^k-20430201 is a prime.

It is a super-2 number, since 2×20430201² = 834786225800802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20430251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 991 + ... + 6468.

It is an arithmetic number, because the mean of its divisors is an integer number (1879920).

Almost surely, 2^20430201 is an apocalyptic number.

It is an amenable number.

20430201 is a deficient number, since it is larger than the sum of its proper divisors (9648519).

20430201 is a wasteful number, since it uses less digits than its factorization.

20430201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7556.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20430201 is about 4519.9779866721. The cubic root of 20430201 is about 273.3742134309.

Adding to 20430201 its reverse (10203402), we get a palindrome (30633603).

The spelling of 20430201 in words is "twenty million, four hundred thirty thousand, two hundred one".