20316632 has 32 divisors (see below), whose sum is σ = 46098720. Its totient is φ = 8194560.

The previous prime is 20316631. The next prime is 20316641. The reversal of 20316632 is 23661302.

It is a junction number, because it is equal to n+sod(n) for n = 20316598 and 20316607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20316631) 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, 9719 + ... + 11622.

It is an arithmetic number, because the mean of its divisors is an integer number (1440585).

Almost surely, 2^20316632 is an apocalyptic number.

It is an amenable number.

20316632 is an abundant number, since it is smaller than the sum of its proper divisors (25782088).

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

20316632 is a wasteful number, since it uses less digits than its factorization.

20316632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21371 (or 21367 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20316632 is about 4507.3974752622. The cubic root of 20316632 is about 272.8667205792.

Adding to 20316632 its reverse (23661302), we get a palindrome (43977934).

The spelling of 20316632 in words is "twenty million, three hundred sixteen thousand, six hundred thirty-two".