20206361 has 8 divisors (see below), whose sum is σ = 23331840. Its totient is φ = 17140608.

The previous prime is 20206349. The next prime is 20206369. The reversal of 20206361 is 16360202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20206361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20206369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14201 + ... + 15558.

It is an arithmetic number, because the mean of its divisors is an integer number (2916480).

Almost surely, 2^20206361 is an apocalyptic number.

It is an amenable number.

20206361 is a deficient number, since it is larger than the sum of its proper divisors (3125479).

20206361 is an equidigital number, since it uses as much as digits as its factorization.

20206361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29863.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20206361 is about 4495.1486071097. The cubic root of 20206361 is about 272.3721522431.

Adding to 20206361 its reverse (16360202), we get a palindrome (36566563).

The spelling of 20206361 in words is "twenty million, two hundred six thousand, three hundred sixty-one".