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130806664 = 23101316141
BaseRepresentation
bin1111100101111…
…11001110001000
3100010010200000021
413302333032020
5231441303124
620551350224
73145560352
oct762771610
9303120007
10130806664
1167922a8a
1237982374
132113b9c1
14135300d2
15b73c7e4
hex7cbf388

130806664 has 16 divisors (see below), whose sum is σ = 245519820. Its totient is φ = 65334720.

The previous prime is 130806629. The next prime is 130806673. The reversal of 130806664 is 466608031.

It can be written as a sum of positive squares in 2 ways, for example, as 109369764 + 21436900 = 10458^2 + 4630^2 .

It is a super-2 number, since 2×1308066642 = 34220766693617792, which contains 22 as substring.

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, 34 + ... + 16174.

Almost surely, 2130806664 is an apocalyptic number.

It is an amenable number.

130806664 is a deficient number, since it is larger than the sum of its proper divisors (114713156).

130806664 is a wasteful number, since it uses less digits than its factorization.

130806664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17160 (or 17156 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 130806664 is about 11437.0741013600. The cubic root of 130806664 is about 507.6253359941.

The spelling of 130806664 in words is "one hundred thirty million, eight hundred six thousand, six hundred sixty-four".

Divisors: 1 2 4 8 1013 2026 4052 8104 16141 32282 64564 129128 16350833 32701666 65403332 130806664