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130243893 = 3133339587
BaseRepresentation
bin1111100001101…
…01110100110101
3100002002002000220
413300311310311
5231320301033
620531324553
73141024543
oct760656465
9302062026
10130243893
116757918a
1237750759
1320ca27c0
1413424d93
15b67abb3
hex7c35d35

130243893 has 8 divisors (see below), whose sum is σ = 187016928. Its totient is φ = 80150064.

The previous prime is 130243873. The next prime is 130243907. The reversal of 130243893 is 398342031.

It is a happy number.

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

It is not a de Polignac number, because 130243893 - 28 = 130243637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130243823) 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, 1669755 + ... + 1669832.

It is an arithmetic number, because the mean of its divisors is an integer number (23377116).

Almost surely, 2130243893 is an apocalyptic number.

130243893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

130243893 is a deficient number, since it is larger than the sum of its proper divisors (56773035).

130243893 is a wasteful number, since it uses less digits than its factorization.

130243893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339603.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 130243893 is about 11412.4446548494. Note that the first 3 decimals coincide. The cubic root of 130243893 is about 506.8963020610.

The spelling of 130243893 in words is "one hundred thirty million, two hundred forty-three thousand, eight hundred ninety-three".

Divisors: 1 3 13 39 3339587 10018761 43414631 130243893