52000720 has 40 divisors (see below), whose sum is σ = 127268640. Its totient is φ = 19704960.

The previous prime is 52000709. The next prime is 52000721. The reversal of 52000720 is 2700025.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 52000694 and 52000703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52000721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15586 + ... + 18625.

It is an arithmetic number, because the mean of its divisors is an integer number (3181716).

Almost surely, 2^52000720 is an apocalyptic number.

It is an amenable number.

52000720 is an abundant number, since it is smaller than the sum of its proper divisors (75267920).

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

52000720 is a wasteful number, since it uses less digits than its factorization.

52000720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34243 (or 34237 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 16.

The square root of 52000720 is about 7211.1524737728. The cubic root of 52000720 is about 373.2528383712.

Adding to 52000720 its reverse (2700025), we get a palindrome (54700745).

The spelling of 52000720 in words is "fifty-two million, seven hundred twenty", and thus it is an aban number.