20427035 has 4 divisors (see below), whose sum is σ = 24512448. Its totient is φ = 16341624.

The previous prime is 20427031. The next prime is 20427037. The reversal of 20427035 is 53072402.

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 20427035 - 2² = 20427031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20427035.

It is not an unprimeable number, because it can be changed into a prime (20427031) 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, 2042699 + ... + 2042708.

It is an arithmetic number, because the mean of its divisors is an integer number (6128112).

Almost surely, 2^20427035 is an apocalyptic number.

20427035 is a deficient number, since it is larger than the sum of its proper divisors (4085413).

20427035 is an equidigital number, since it uses as much as digits as its factorization.

20427035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085412.

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

The square root of 20427035 is about 4519.6277501582. The cubic root of 20427035 is about 273.3600914051.

Adding to 20427035 its reverse (53072402), we get a palindrome (73499437).

The spelling of 20427035 in words is "twenty million, four hundred twenty-seven thousand, thirty-five".