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840852 = 223223357
BaseRepresentation
bin11001101010010010100
31120201102200
43031102110
5203401402
630004500
710101315
oct3152224
91521380
10840852
11524821
12346730
1323595c
1417c60c
1511921c
hexcd494

840852 has 18 divisors (see below), whose sum is σ = 2125578. Its totient is φ = 280272.

The previous prime is 840841. The next prime is 840859. The reversal of 840852 is 258048.

It can be written as a sum of positive squares in only one way, i.e., 799236 + 41616 = 894^2 + 204^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 840852.

It is not an unprimeable number, because it can be changed into a prime (840859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11643 + ... + 11714.

2840852 is an apocalyptic number.

It is an amenable number.

840852 is an abundant number, since it is smaller than the sum of its proper divisors (1284726).

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

840852 is a wasteful number, since it uses less digits than its factorization.

840852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23367 (or 23362 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 840852 is about 916.9798252961. The cubic root of 840852 is about 94.3857694244.

The spelling of 840852 in words is "eight hundred forty thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 23357 46714 70071 93428 140142 210213 280284 420426 840852