20685326 has 8 divisors (see below), whose sum is σ = 32377104. Its totient is φ = 9892960.

The previous prime is 20685307. The next prime is 20685337. The reversal of 20685326 is 62358602.

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 = 20685292 and 20685301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224795 + ... + 224886.

It is an arithmetic number, because the mean of its divisors is an integer number (4047138).

Almost surely, 2^20685326 is an apocalyptic number.

20685326 is a deficient number, since it is larger than the sum of its proper divisors (11691778).

20685326 is a wasteful number, since it uses less digits than its factorization.

20685326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449706.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 20685326 is about 4548.1123556922. The cubic root of 20685326 is about 274.5074422641.

The spelling of 20685326 in words is "twenty million, six hundred eighty-five thousand, three hundred twenty-six".