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851140 = 22542557
BaseRepresentation
bin11001111110011000100
31121020112201
43033303010
5204214030
630124244
710143313
oct3176304
91536481
10851140
11531524
12350684
1323a544
1418227a
1511c2ca
hexcfcc4

851140 has 12 divisors (see below), whose sum is σ = 1787436. Its totient is φ = 340448.

The previous prime is 851131. The next prime is 851153. The reversal of 851140 is 41158.

It can be written as a sum of positive squares in 2 ways, for example, as 643204 + 207936 = 802^2 + 456^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21259 + ... + 21298.

It is an arithmetic number, because the mean of its divisors is an integer number (148953).

2851140 is an apocalyptic number.

It is an amenable number.

851140 is an abundant number, since it is smaller than the sum of its proper divisors (936296).

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

851140 is a wasteful number, since it uses less digits than its factorization.

851140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42566 (or 42564 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 851140 is about 922.5724903768. The cubic root of 851140 is about 94.7691532628.

Adding to 851140 its reverse (41158), we get a palindrome (892298).

It can be divided in two parts, 85 and 1140, that added together give a triangular number (1225 = T49).

The spelling of 851140 in words is "eight hundred fifty-one thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 42557 85114 170228 212785 425570 851140