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130251424 = 254199277
BaseRepresentation
bin1111100001101…
…11101010100000
3100002002110100211
413300313222200
5231321021144
620531423504
73141055522
oct760675240
9302073324
10130251424
1167583906
1237754b94
1320ca6064
1413427a12
15b67d034
hex7c37aa0

130251424 has 24 divisors (see below), whose sum is σ = 262689588. Its totient is φ = 63536640.

The previous prime is 130251389. The next prime is 130251449. The reversal of 130251424 is 424152031.

It can be written as a sum of positive squares in 2 ways, for example, as 85895824 + 44355600 = 9268^2 + 6660^2 .

It is a junction number, because it is equal to n+sod(n) for n = 130251395 and 130251404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48327 + ... + 50950.

Almost surely, 2130251424 is an apocalyptic number.

It is an amenable number.

130251424 is an abundant number, since it is smaller than the sum of its proper divisors (132438164).

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

130251424 is an equidigital number, since it uses as much as digits as its factorization.

130251424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99328 (or 99320 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 130251424 is about 11412.7745969155. The cubic root of 130251424 is about 506.9060718408.

The spelling of 130251424 in words is "one hundred thirty million, two hundred fifty-one thousand, four hundred twenty-four".

Divisors: 1 2 4 8 16 32 41 82 164 328 656 1312 99277 198554 397108 794216 1588432 3176864 4070357 8140714 16281428 32562856 65125712 130251424