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130909249 = 319714349
BaseRepresentation
bin1111100110110…
…00010001000001
3100010022212201201
413303120101001
5232003043444
620553501201
73146465422
oct763302101
9303285651
10130909249
1167993069
1237a11801
13211765c3
1413559649
15b75cdd4
hex7cd8441

130909249 has 8 divisors (see below), whose sum is σ = 135302400. Its totient is φ = 126526800.

The previous prime is 130909237. The next prime is 130909283. The reversal of 130909249 is 942909031.

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 130909249 - 215 = 130876481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130909549) 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, 27927 + ... + 32275.

It is an arithmetic number, because the mean of its divisors is an integer number (16912800).

Almost surely, 2130909249 is an apocalyptic number.

It is an amenable number.

130909249 is a deficient number, since it is larger than the sum of its proper divisors (4393151).

130909249 is an equidigital number, since it uses as much as digits as its factorization.

130909249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 130909249 is about 11441.5579795760. The cubic root of 130909249 is about 507.7580028788.

The spelling of 130909249 in words is "one hundred thirty million, nine hundred nine thousand, two hundred forty-nine".

Divisors: 1 31 971 4349 30101 134819 4222879 130909249