52864720 has 20 divisors (see below), whose sum is σ = 122910660. Its totient is φ = 21145856.

The previous prime is 52864717. The next prime is 52864727. The reversal of 52864720 is 2746825.

It can be written as a sum of positive squares in 2 ways, for example, as 32901696 + 19963024 = 5736^2 + 4468^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52864727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330325 + ... + 330484.

It is an arithmetic number, because the mean of its divisors is an integer number (6145533).

Almost surely, 2^52864720 is an apocalyptic number.

It is an amenable number.

52864720 is an abundant number, since it is smaller than the sum of its proper divisors (70045940).

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

52864720 is a wasteful number, since it uses less digits than its factorization.

52864720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660822 (or 660816 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 52864720 is about 7270.8128844030. The cubic root of 52864720 is about 375.3087117151.

The spelling of 52864720 in words is "fifty-two million, eight hundred sixty-four thousand, seven hundred twenty".