852747840 has 168 divisors, whose sum is σ = 3352190400. Its totient is φ = 194909184.

The previous prime is 852747817. The next prime is 852747851. The reversal of 852747840 is 48747258.

852747840 is a `hidden beast` number, since 8 + 527 + 47 + 84 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 990 + ... + 41309.

Almost surely, 2^852747840 is an apocalyptic number.

852747840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 852747840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1676095200).

852747840 is an abundant number, since it is smaller than the sum of its proper divisors (2499442560).

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

852747840 is a wasteful number, since it uses less digits than its factorization.

852747840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42329 (or 42316 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 852747840 is about 29201.8465169585. The cubic root of 852747840 is about 948.2879005940.

The spelling of 852747840 in words is "eight hundred fifty-two million, seven hundred forty-seven thousand, eight hundred forty".