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130249679 = 719993503
BaseRepresentation
bin1111100001101…
…11001111001111
3100002002100222012
413300313033033
5231320442204
620531411435
73141050450
oct760671717
9302070865
10130249679
116758256a
1237753b7b
1320ca5321
1413427127
15b67c76e
hex7c373cf

130249679 has 8 divisors (see below), whose sum is σ = 149606400. Its totient is φ = 111080376.

The previous prime is 130249663. The next prime is 130249687. The reversal of 130249679 is 976942031.

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 130249679 - 24 = 130249663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130249619) 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, 45359 + ... + 48144.

It is an arithmetic number, because the mean of its divisors is an integer number (18700800).

Almost surely, 2130249679 is an apocalyptic number.

130249679 is a deficient number, since it is larger than the sum of its proper divisors (19356721).

130249679 is an equidigital number, since it uses as much as digits as its factorization.

130249679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93709.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 130249679 is about 11412.6981472393. The cubic root of 130249679 is about 506.9038081290.

The spelling of 130249679 in words is "one hundred thirty million, two hundred forty-nine thousand, six hundred seventy-nine".

Divisors: 1 7 199 1393 93503 654521 18607097 130249679