56016720 has 60 divisors (see below), whose sum is σ = 188125236. Its totient is φ = 14937600.

The previous prime is 56016691. The next prime is 56016733. The reversal of 56016720 is 2761065.

It can be written as a sum of positive squares in 2 ways, for example, as 25280784 + 30735936 = 5028^2 + 5544^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38181 + ... + 39620.

Almost surely, 2^56016720 is an apocalyptic number.

It is an amenable number.

56016720 is an abundant number, since it is smaller than the sum of its proper divisors (132108516).

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

56016720 is a wasteful number, since it uses less digits than its factorization.

56016720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77820 (or 77811 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 56016720 is about 7484.4318421641. The cubic root of 56016720 is about 382.6243092053.

Adding to 56016720 its reverse (2761065), we get a palindrome (58777785).

It can be divided in two parts, 5601 and 6720, that added together give a palindrome (12321).

The spelling of 56016720 in words is "fifty-six million, sixteen thousand, seven hundred twenty".