20316208 has 40 divisors (see below), whose sum is σ = 43457040. Its totient is φ = 9123840.

The previous prime is 20316203. The next prime is 20316217. The reversal of 20316208 is 80261302.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20316203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15016 + ... + 16312.

It is an arithmetic number, because the mean of its divisors is an integer number (1086426).

Almost surely, 2^20316208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20316208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21728520).

20316208 is an abundant number, since it is smaller than the sum of its proper divisors (23140832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20316208 is a wasteful number, since it uses less digits than its factorization.

20316208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20316208 is about 4507.3504412238. The cubic root of 20316208 is about 272.8648223595.

The spelling of 20316208 in words is "twenty million, three hundred sixteen thousand, two hundred eight".