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13130940 = 2235218849
BaseRepresentation
bin110010000101…
…110010111100
3220201010021010
4302011302330
511330142230
61145235220
7216416424
oct62056274
926633233
1013130940
117459519
124492b10
1329499b4
141a5b484
1512459b0
hexc85cbc

13130940 has 24 divisors (see below), whose sum is σ = 36766800. Its totient is φ = 3501568.

The previous prime is 13130927. The next prime is 13130969. The reversal of 13130940 is 4903131.

13130940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109365 + ... + 109484.

It is an arithmetic number, because the mean of its divisors is an integer number (1531950).

Almost surely, 213130940 is an apocalyptic number.

13130940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13130940 is an abundant number, since it is smaller than the sum of its proper divisors (23635860).

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

13130940 is a wasteful number, since it uses less digits than its factorization.

13130940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218861 (or 218859 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13130940 is about 3623.6638916986. The cubic root of 13130940 is about 235.9202785407.

The spelling of 13130940 in words is "thirteen million, one hundred thirty thousand, nine hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 218849 437698 656547 875396 1094245 1313094 2188490 2626188 3282735 4376980 6565470 13130940