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130066891 = 1012335527
BaseRepresentation
bin1111100000010…
…10100111001011
3100001202002020021
413300022213023
5231244120031
620523441311
73136356523
oct760124713
9301662207
10130066891
11674681a9
1237686237
1320c40076
14133ba683
15b643511
hex7c0a9cb

130066891 has 8 divisors (see below), whose sum is σ = 131942304. Its totient is φ = 128203200.

The previous prime is 130066889. The next prime is 130066901. The reversal of 130066891 is 198660031.

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

It is a cyclic number.

It is not a de Polignac number, because 130066891 - 21 = 130066889 is a prime.

It is a super-2 number, since 2×1300668912 = 33834792268811762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130066861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20770 + ... + 26296.

It is an arithmetic number, because the mean of its divisors is an integer number (16492788).

Almost surely, 2130066891 is an apocalyptic number.

130066891 is a deficient number, since it is larger than the sum of its proper divisors (1875413).

130066891 is a wasteful number, since it uses less digits than its factorization.

130066891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5861.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 130066891 is about 11404.6872381491. The cubic root of 130066891 is about 506.6665732244. Note that the first 3 decimals are identical.

The spelling of 130066891 in words is "one hundred thirty million, sixty-six thousand, eight hundred ninety-one".

Divisors: 1 101 233 5527 23533 558227 1287791 130066891