652805440 has 336 divisors, whose sum is σ = 2001438720. Its totient is φ = 201277440.

The previous prime is 652805353. The next prime is 652805473. The reversal of 652805440 is 44508256.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 652805396 and 652805405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8263321 + ... + 8263399.

Almost surely, 2^652805440 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 652805440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000719360).

652805440 is an abundant number, since it is smaller than the sum of its proper divisors (1348633280).

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

652805440 is a wasteful number, since it uses less digits than its factorization.

652805440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 652805440 is about 25550.0575341818. The cubic root of 652805440 is about 867.4835637633.

The spelling of 652805440 in words is "six hundred fifty-two million, eight hundred five thousand, four hundred forty".