20132616 has 64 divisors (see below), whose sum is σ = 57859200. Its totient is φ = 5718528.

The previous prime is 20132611. The next prime is 20132617. The reversal of 20132616 is 61623102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20132592 and 20132601.

It is not an unprimeable number, because it can be changed into a prime (20132611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49020 + ... + 49428.

It is an arithmetic number, because the mean of its divisors is an integer number (904050).

Almost surely, 2^20132616 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 20132616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28929600).

20132616 is an abundant number, since it is smaller than the sum of its proper divisors (37726584).

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

20132616 is a wasteful number, since it uses less digits than its factorization.

20132616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20132616 is about 4486.9383771119. The cubic root of 20132616 is about 272.0403991320.

Adding to 20132616 its reverse (61623102), we get a palindrome (81755718).

The spelling of 20132616 in words is "twenty million, one hundred thirty-two thousand, six hundred sixteen".