52686720 has 128 divisors (see below), whose sum is σ = 186660000. Its totient is φ = 14045184.

The previous prime is 52686719. The next prime is 52686727. The reversal of 52686720 is 2768625.

52686720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52686727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15756 + ... + 18804.

Almost surely, 2^52686720 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 52686720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93330000).

52686720 is an abundant number, since it is smaller than the sum of its proper divisors (133973280).

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

52686720 is a wasteful number, since it uses less digits than its factorization.

52686720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077 (or 3059 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 52686720 is about 7258.5618410261. The cubic root of 52686720 is about 374.8870059563.

The spelling of 52686720 in words is "fifty-two million, six hundred eighty-six thousand, seven hundred twenty".