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13134740 = 225656737
BaseRepresentation
bin110010000110…
…101110010100
3220201022110212
4302012232110
511330302430
61145304552
7216433463
oct62065624
926638425
1013134740
117461363
124495158
13294b648
141a5c9da
151246b95
hexc86b94

13134740 has 12 divisors (see below), whose sum is σ = 27582996. Its totient is φ = 5253888.

The previous prime is 13134739. The next prime is 13134743. The reversal of 13134740 is 4743131.

It can be written as a sum of positive squares in 2 ways, for example, as 6091024 + 7043716 = 2468^2 + 2654^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13134743) by changing a digit.

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, 328349 + ... + 328388.

It is an arithmetic number, because the mean of its divisors is an integer number (2298583).

Almost surely, 213134740 is an apocalyptic number.

13134740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13134740 is an abundant number, since it is smaller than the sum of its proper divisors (14448256).

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

13134740 is a wasteful number, since it uses less digits than its factorization.

13134740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656746 (or 656744 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 13134740 is about 3624.1881849595. The cubic root of 13134740 is about 235.9430342254.

Adding to 13134740 its reverse (4743131), we get a palindrome (17877871).

The spelling of 13134740 in words is "thirteen million, one hundred thirty-four thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 656737 1313474 2626948 3283685 6567370 13134740