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130805954 = 2197333149
BaseRepresentation
bin1111100101111…
…11000011000010
3100010010122000222
413302333003002
5231441242304
620551343042
73145555316
oct762770302
9303118028
10130805954
11679224a4
1237981a82
132113b596
141352db46
15b73c4be
hex7cbf0c2

130805954 has 8 divisors (see below), whose sum is σ = 196314300. Its totient is φ = 65367856.

The previous prime is 130805953. The next prime is 130805959. The reversal of 130805954 is 459508031.

It can be written as a sum of positive squares in 2 ways, for example, as 124925329 + 5880625 = 11177^2 + 2425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1308059542 = 34220395203700232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130805953) 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, 12629 + ... + 20520.

Almost surely, 2130805954 is an apocalyptic number.

130805954 is a deficient number, since it is larger than the sum of its proper divisors (65508346).

130805954 is a wasteful number, since it uses less digits than its factorization.

130805954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35124.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 130805954 is about 11437.0430619107. The cubic root of 130805954 is about 507.6244175530.

The spelling of 130805954 in words is "one hundred thirty million, eight hundred five thousand, nine hundred fifty-four".

Divisors: 1 2 1973 3946 33149 66298 65402977 130805954