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260830389 = 3432239067
BaseRepresentation
bin11111000101111…
…11010010110101
3200011210120000210
433202333102311
51013233033024
641514300033
76315010311
oct1742772265
9604716023
10260830389
11124260806
1273427619
1342065211
14268d8b41
1517d73129
hexf8bf4b5

260830389 has 16 divisors (see below), whose sum is σ = 357496832. Its totient is φ = 169062768.

The previous prime is 260830291. The next prime is 260830391. The reversal of 260830389 is 983038062.

It is not a de Polignac number, because 260830389 - 27 = 260830261 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260820389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24234 + ... + 33300.

It is an arithmetic number, because the mean of its divisors is an integer number (22343552).

Almost surely, 2260830389 is an apocalyptic number.

It is an amenable number.

260830389 is a deficient number, since it is larger than the sum of its proper divisors (96666443).

260830389 is a wasteful number, since it uses less digits than its factorization.

260830389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9336.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 260830389 is about 16150.2442396392. The cubic root of 260830389 is about 638.9291900151.

The spelling of 260830389 in words is "two hundred sixty million, eight hundred thirty thousand, three hundred eighty-nine".

Divisors: 1 3 43 129 223 669 9067 9589 27201 28767 389881 1169643 2021941 6065823 86943463 260830389