20635234 has 8 divisors (see below), whose sum is σ = 30978000. Its totient is φ = 10309236.

The previous prime is 20635231. The next prime is 20635261. The reversal of 20635234 is 43253602.

It is a happy number.

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 = 20635199 and 20635208.

It is not an unprimeable number, because it can be changed into a prime (20635231) 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, 444 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (3872250).

Almost surely, 2^20635234 is an apocalyptic number.

20635234 is a deficient number, since it is larger than the sum of its proper divisors (10342766).

20635234 is a wasteful number, since it uses less digits than its factorization.

20635234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8384.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 20635234 is about 4542.6021177294. The cubic root of 20635234 is about 274.2856789176.

Adding to 20635234 its reverse (43253602), we get a palindrome (63888836).

The spelling of 20635234 in words is "twenty million, six hundred thirty-five thousand, two hundred thirty-four".