52000640 has 64 divisors (see below), whose sum is σ = 128373120. Its totient is φ = 20121600.

The previous prime is 52000639. The next prime is 52000673. The reversal of 52000640 is 4600025.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18530 + ... + 21150.

It is an arithmetic number, because the mean of its divisors is an integer number (2005830).

Almost surely, 2^52000640 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 52000640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64186560).

52000640 is an abundant number, since it is smaller than the sum of its proper divisors (76372480).

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

52000640 is a wasteful number, since it uses less digits than its factorization.

52000640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671 (or 2659 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 52000640 is about 7211.1469268071. The cubic root of 52000640 is about 373.2526469621.

Adding to 52000640 its reverse (4600025), we get a palindrome (56600665).

The spelling of 52000640 in words is "fifty-two million, six hundred forty", and thus it is an aban number.