652443440 has 40 divisors (see below), whose sum is σ = 1654836048. Its totient is φ = 237251840.

The previous prime is 652443433. The next prime is 652443469. The reversal of 652443440 is 44344256.

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

It is a junction number, because it is equal to n+sod(n) for n = 652443397 and 652443406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369827 + ... + 371586.

Almost surely, 2^652443440 is an apocalyptic number.

It is an amenable number.

652443440 is an abundant number, since it is smaller than the sum of its proper divisors (1002392608).

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

652443440 is a wasteful number, since it uses less digits than its factorization.

652443440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741437 (or 741431 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

The square root of 652443440 is about 25542.9724190432. The cubic root of 652443440 is about 867.3231856501.

Adding to 652443440 its reverse (44344256), we get a palindrome (696787696).

The spelling of 652443440 in words is "six hundred fifty-two million, four hundred forty-three thousand, four hundred forty".