20813326 has 8 divisors (see below), whose sum is σ = 31240440. Its totient is φ = 10399848.

The previous prime is 20813323. The next prime is 20813347. The reversal of 20813326 is 62331802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20813326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20813323) 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 in 3 ways as a sum of consecutive naturals, for example, 2365 + ... + 6871.

It is an arithmetic number, because the mean of its divisors is an integer number (3905055).

Almost surely, 2^20813326 is an apocalyptic number.

20813326 is a deficient number, since it is larger than the sum of its proper divisors (10427114).

20813326 is a wasteful number, since it uses less digits than its factorization.

20813326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20813326 is about 4562.1624258678. The cubic root of 20813326 is about 275.0724921836.

The spelling of 20813326 in words is "twenty million, eight hundred thirteen thousand, three hundred twenty-six".