56016620 has 48 divisors (see below), whose sum is σ = 129650976. Its totient is φ = 20160000.

The previous prime is 56016607. The next prime is 56016641. The reversal of 56016620 is 2661065.

It is a self number, because there is not a number n which added to its sum of digits gives 56016620.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20960 + ... + 23480.

It is an arithmetic number, because the mean of its divisors is an integer number (2701062).

Almost surely, 2^56016620 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 56016620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64825488).

56016620 is an abundant number, since it is smaller than the sum of its proper divisors (73634356).

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

56016620 is a wasteful number, since it uses less digits than its factorization.

56016620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642 (or 2640 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 56016620 is about 7484.4251616273. The cubic root of 56016620 is about 382.6240815206.

Adding to 56016620 its reverse (2661065), we get a palindrome (58677685).

It can be divided in two parts, 5601 and 6620, that added together give a palindrome (12221).

The spelling of 56016620 in words is "fifty-six million, sixteen thousand, six hundred twenty".