52020320 has 72 divisors (see below), whose sum is σ = 135136512. Its totient is φ = 18909440.

The previous prime is 52020317. The next prime is 52020337. The reversal of 52020320 is 2302025.

It is a super-2 number, since 2×52020320² = 5412227385804800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52020295 and 52020304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18017 + ... + 20703.

It is an arithmetic number, because the mean of its divisors is an integer number (1876896).

Almost surely, 2^52020320 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 52020320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67568256).

52020320 is an abundant number, since it is smaller than the sum of its proper divisors (83116192).

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

52020320 is a wasteful number, since it uses less digits than its factorization.

52020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724 (or 2705 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 52020320 is about 7212.5113518108. The cubic root of 52020320 is about 373.2997277007.

Adding to 52020320 its reverse (2302025), we get a palindrome (54322345).

It can be divided in two parts, 52020 and 320, that multiplied together give a square (16646400 = 4080²).

The spelling of 52020320 in words is "fifty-two million, twenty thousand, three hundred twenty".