20127634 has 8 divisors (see below), whose sum is σ = 30227328. Its totient is φ = 10051860.

The previous prime is 20127619. The next prime is 20127637. The reversal of 20127634 is 43672102.

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

It is a junction number, because it is equal to n+sod(n) for n = 20127599 and 20127608.

It is not an unprimeable number, because it can be changed into a prime (20127637) 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, 3702 + ... + 7345.

It is an arithmetic number, because the mean of its divisors is an integer number (3778416).

Almost surely, 2^20127634 is an apocalyptic number.

20127634 is a deficient number, since it is larger than the sum of its proper divisors (10099694).

20127634 is a wasteful number, since it uses less digits than its factorization.

20127634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11960.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20127634 is about 4486.3831757887. The cubic root of 20127634 is about 272.0179576523.

Adding to 20127634 its reverse (43672102), we get a palindrome (63799736).

The spelling of 20127634 in words is "twenty million, one hundred twenty-seven thousand, six hundred thirty-four".