20316496 has 40 divisors (see below), whose sum is σ = 42111144. Its totient is φ = 9461760.

The previous prime is 20316493. The next prime is 20316497. The reversal of 20316496 is 69461302.

It can be written as a sum of positive squares in 4 ways, for example, as 2676496 + 17640000 = 1636^2 + 4200^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20316493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30406 + ... + 31066.

Almost surely, 2^20316496 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 20316496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21055572).

20316496 is an abundant number, since it is smaller than the sum of its proper divisors (21794648).

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

20316496 is a wasteful number, since it uses less digits than its factorization.

20316496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20316496 is about 4507.3823889260. The cubic root of 20316496 is about 272.8661117191.

Adding to 20316496 its reverse (69461302), we get a palindrome (89777798).

The spelling of 20316496 in words is "twenty million, three hundred sixteen thousand, four hundred ninety-six".