20080427 has 4 divisors (see below), whose sum is σ = 20121816. Its totient is φ = 20039040.

The previous prime is 20080409. The next prime is 20080429. The reversal of 20080427 is 72408002.

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 20080427 - 2⁸ = 20080171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20080429) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19958 + ... + 20939.

It is an arithmetic number, because the mean of its divisors is an integer number (5030454).

Almost surely, 2^20080427 is an apocalyptic number.

20080427 is a deficient number, since it is larger than the sum of its proper divisors (41389).

20080427 is an equidigital number, since it uses as much as digits as its factorization.

20080427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41388.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 20080427 is about 4481.1189450850. The cubic root of 20080427 is about 271.8051291274.

Adding to 20080427 its reverse (72408002), we get a palindrome (92488429).

The spelling of 20080427 in words is "twenty million, eighty thousand, four hundred twenty-seven".