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19130260 = 225956513
BaseRepresentation
bin100100011111…
…0011110010100
31022222220210011
41020332132110
514344132020
61522010004
7321414232
oct110763624
938886704
1019130260
11a886936
1264a6904
133c6a5a6
14277d952
151a2d35a
hex123e794

19130260 has 12 divisors (see below), whose sum is σ = 40173588. Its totient is φ = 7652096.

The previous prime is 19130257. The next prime is 19130261. The reversal of 19130260 is 6203191.

It can be written as a sum of positive squares in 2 ways, for example, as 7420176 + 11710084 = 2724^2 + 3422^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19130261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478237 + ... + 478276.

It is an arithmetic number, because the mean of its divisors is an integer number (3347799).

Almost surely, 219130260 is an apocalyptic number.

19130260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19130260 is an abundant number, since it is smaller than the sum of its proper divisors (21043328).

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

19130260 is a wasteful number, since it uses less digits than its factorization.

19130260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956522 (or 956520 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 19130260 is about 4373.8152681612. The cubic root of 19130260 is about 267.4485766001.

The spelling of 19130260 in words is "nineteen million, one hundred thirty thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 956513 1913026 3826052 4782565 9565130 19130260