20634334 has 16 divisors (see below), whose sum is σ = 35646336. Its totient is φ = 8775000.

The previous prime is 20634329. The next prime is 20634347. The reversal of 20634334 is 43343602.

It is a junction number, because it is equal to n+sod(n) for n = 20634299 and 20634308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3792 + ... + 7459.

It is an arithmetic number, because the mean of its divisors is an integer number (2227896).

Almost surely, 2^20634334 is an apocalyptic number.

20634334 is a deficient number, since it is larger than the sum of its proper divisors (15012002).

20634334 is a wasteful number, since it uses less digits than its factorization.

20634334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11391.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 20634334 is about 4542.5030544844. The cubic root of 20634334 is about 274.2816912284.

Adding to 20634334 its reverse (43343602), we get a palindrome (63977936).

The spelling of 20634334 in words is "twenty million, six hundred thirty-four thousand, three hundred thirty-four".