20316032 has 64 divisors (see below), whose sum is σ = 45239040. Its totient is φ = 9008640.

The previous prime is 20316017. The next prime is 20316041. The reversal of 20316032 is 23061302.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 20316032.

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, 66023 + ... + 66329.

It is an arithmetic number, because the mean of its divisors is an integer number (706860).

Almost surely, 2^20316032 is an apocalyptic number.

20316032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20316032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22619520).

20316032 is an abundant number, since it is smaller than the sum of its proper divisors (24923008).

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

20316032 is a wasteful number, since it uses less digits than its factorization.

20316032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 20316032 is about 4507.3309175165. The cubic root of 20316032 is about 272.8640344115.

Adding to 20316032 its reverse (23061302), we get a palindrome (43377334).

The spelling of 20316032 in words is "twenty million, three hundred sixteen thousand, thirty-two".