20634104 has 16 divisors (see below), whose sum is σ = 39324120. Its totient is φ = 10147680.

The previous prime is 20634101. The next prime is 20634143. The reversal of 20634104 is 40143602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20634101) 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, 20654 + ... + 21629.

Almost surely, 2^20634104 is an apocalyptic number.

It is an amenable number.

20634104 is a deficient number, since it is larger than the sum of its proper divisors (18690016).

20634104 is a wasteful number, since it uses less digits than its factorization.

20634104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42350 (or 42346 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20634104 is about 4542.4777379752. The cubic root of 20634104 is about 274.2806721337.

Adding to 20634104 its reverse (40143602), we get a palindrome (60777706).

The spelling of 20634104 in words is "twenty million, six hundred thirty-four thousand, one hundred four".