652387840 has 80 divisors (see below), whose sum is σ = 1684610928. Its totient is φ = 240869376.

The previous prime is 652387837. The next prime is 652387843. The reversal of 652387840 is 48783256.

It is an interprime number because it is at equal distance from previous prime (652387837) and next prime (652387843).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652387843) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23479 + ... + 43081.

Almost surely, 2^652387840 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 652387840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842305464).

652387840 is an abundant number, since it is smaller than the sum of its proper divisors (1032223088).

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

652387840 is a wasteful number, since it uses less digits than its factorization.

652387840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19639 (or 19623 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 652387840 is about 25541.8840338766. The cubic root of 652387840 is about 867.2985477346.

The spelling of 652387840 in words is "six hundred fifty-two million, three hundred eighty-seven thousand, eight hundred forty".