52067440 has 40 divisors (see below), whose sum is σ = 121585968. Its totient is φ = 20736000.

The previous prime is 52067437. The next prime is 52067471. The reversal of 52067440 is 4476025.

52067440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×52067440² = 5422036616307200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52067399 and 52067408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18784 + ... + 21376.

Almost surely, 2^52067440 is an apocalyptic number.

It is an amenable number.

52067440 is an abundant number, since it is smaller than the sum of its proper divisors (69518528).

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

52067440 is a wasteful number, since it uses less digits than its factorization.

52067440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857 (or 2851 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 52067440 is about 7215.7771584217. Note that the first 3 decimals coincide. The cubic root of 52067440 is about 373.4124053035.

The spelling of 52067440 in words is "fifty-two million, sixty-seven thousand, four hundred forty".