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130828459 = 971348747
BaseRepresentation
bin1111100110001…
…00100010101011
3100010011202220111
413303010202223
5231443002314
620552035151
73146011036
oct763044253
9303152814
10130828459
11679383a3
1237992ab7
13211488b8
141353801d
15b743ec4
hex7cc48ab

130828459 has 4 divisors (see below), whose sum is σ = 132177304. Its totient is φ = 129479616.

The previous prime is 130828457. The next prime is 130828513. The reversal of 130828459 is 954828031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954828031 = 3725806163.

It is a cyclic number.

It is not a de Polignac number, because 130828459 - 21 = 130828457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130828457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674277 + ... + 674470.

It is an arithmetic number, because the mean of its divisors is an integer number (33044326).

Almost surely, 2130828459 is an apocalyptic number.

130828459 is a deficient number, since it is larger than the sum of its proper divisors (1348845).

130828459 is an equidigital number, since it uses as much as digits as its factorization.

130828459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348844.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 130828459 is about 11438.0268840390. The cubic root of 130828459 is about 507.6535279313.

The spelling of 130828459 in words is "one hundred thirty million, eight hundred twenty-eight thousand, four hundred fifty-nine".

Divisors: 1 97 1348747 130828459