20050634 has 4 divisors (see below), whose sum is σ = 30075954. Its totient is φ = 10025316.

The previous prime is 20050631. The next prime is 20050651. The reversal of 20050634 is 43605002.

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

It can be written as a sum of positive squares in only one way, i.e., 19386409 + 664225 = 4403^2 + 815^2 .

It is not an unprimeable number, because it can be changed into a prime (20050631) 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 as a sum of consecutive naturals, namely, 5012657 + ... + 5012660.

Almost surely, 2^20050634 is an apocalyptic number.

20050634 is a deficient number, since it is larger than the sum of its proper divisors (10025320).

20050634 is a wasteful number, since it uses less digits than its factorization.

20050634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10025319.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20050634 is about 4477.7934298045. The cubic root of 20050634 is about 271.6706383217.

Adding to 20050634 its reverse (43605002), we get a palindrome (63655636).

The spelling of 20050634 in words is "twenty million, fifty thousand, six hundred thirty-four".