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1310868 = 2232132801
BaseRepresentation
bin101000000000010010100
32110121011200
411000002110
5313421433
644032500
714066526
oct5000224
92417150
101310868
11815969
12532730
1336b880
14261a16
151ad613
hex140094

1310868 has 36 divisors (see below), whose sum is σ = 3569748. Its totient is φ = 403200.

The previous prime is 1310851. The next prime is 1310891. The reversal of 1310868 is 8680131.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 898704 = 642^2 + 948^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 933 + ... + 1868.

21310868 is an apocalyptic number.

1310868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1310868 is an abundant number, since it is smaller than the sum of its proper divisors (2258880).

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

1310868 is a wasteful number, since it uses less digits than its factorization.

1310868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1310868 is about 1144.9314389954. The cubic root of 1310868 is about 109.4425795150.

Adding to 1310868 its reverse (8680131), we get a palindrome (9990999).

The spelling of 1310868 in words is "one million, three hundred ten thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 13 18 26 36 39 52 78 117 156 234 468 2801 5602 8403 11204 16806 25209 33612 36413 50418 72826 100836 109239 145652 218478 327717 436956 655434 1310868