947856 has 120 divisors (see below), whose sum is σ = 3166464. Its totient is φ = 241920.

The previous prime is 947851. The next prime is 947857. The reversal of 947856 is 658749.

947856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an alternating number because its digits alternate between odd and even.

Its product of digits (60480) is a multiple of the sum of its prime divisors (56).

It is not an unprimeable number, because it can be changed into a prime (947851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30561 + ... + 30591.

2⁹⁴⁷⁸⁵⁶ 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 947856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1583232).

947856 is an abundant number, since it is smaller than the sum of its proper divisors (2218608).

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

947856 is a wasteful number, since it uses less digits than its factorization.

947856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 56 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 947856 is about 973.5789644400. The cubic root of 947856 is about 98.2307487743.

The spelling of 947856 in words is "nine hundred forty-seven thousand, eight hundred fifty-six".