20350427 has 4 divisors (see below), whose sum is σ = 20379840. Its totient is φ = 20321016.

The previous prime is 20350417. The next prime is 20350433. The reversal of 20350427 is 72405302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20350427 - 2⁸ = 20350171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20350417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13643 + ... + 15060.

It is an arithmetic number, because the mean of its divisors is an integer number (5094960).

Almost surely, 2^20350427 is an apocalyptic number.

20350427 is a deficient number, since it is larger than the sum of its proper divisors (29413).

20350427 is an equidigital number, since it uses as much as digits as its factorization.

20350427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29412.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20350427 is about 4511.1447549375. The cubic root of 20350427 is about 273.0179336750.

Adding to 20350427 its reverse (72405302), we get a palindrome (92755729).

The spelling of 20350427 in words is "twenty million, three hundred fifty thousand, four hundred twenty-seven".