52002720 has 432 divisors, whose sum is σ = 228559968. Its totient is φ = 10644480.

The previous prime is 52002707. The next prime is 52002721. The reversal of 52002720 is 2720025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 52002693 and 52002702.

It is not an unprimeable number, because it can be changed into a prime (52002721) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 776127 + ... + 776193.

It is an arithmetic number, because the mean of its divisors is an integer number (529074).

Almost surely, 2^52002720 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 52002720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114279984).

52002720 is an abundant number, since it is smaller than the sum of its proper divisors (176557248).

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

52002720 is a wasteful number, since it uses less digits than its factorization.

52002720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 52002720 is about 7211.2911465285. The cubic root of 52002720 is about 373.2576235364.

Adding to 52002720 its reverse (2720025), we get a palindrome (54722745).

The spelling of 52002720 in words is "fifty-two million, two thousand, seven hundred twenty".