852643780 has 48 divisors (see below), whose sum is σ = 1815992640. Its totient is φ = 336244608.

The previous prime is 852643711. The next prime is 852643793. The reversal of 852643780 is 87346258.

852643780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493999 + ... + 495721.

It is an arithmetic number, because the mean of its divisors is an integer number (37833180).

Almost surely, 2^852643780 is an apocalyptic number.

It is an amenable number.

852643780 is an abundant number, since it is smaller than the sum of its proper divisors (963348860).

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

852643780 is a wasteful number, since it uses less digits than its factorization.

852643780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2066 counting only the distinct ones).

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

The square root of 852643780 is about 29200.0647259557. The cubic root of 852643780 is about 948.2493261376.

The spelling of 852643780 in words is "eight hundred fifty-two million, six hundred forty-three thousand, seven hundred eighty".