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130752287 = 1761312547
BaseRepresentation
bin1111100101100…
…01111100011111
3100010000220102022
413302301330133
5231433033122
620550250355
73145243001
oct762617437
9303026368
10130752287
1167896146
12379569bb
1321120023
1413518371
15b72b642
hex7cb1f1f

130752287 has 8 divisors (see below), whose sum is σ = 138680496. Its totient is φ = 122850432.

The previous prime is 130752283. The next prime is 130752299. The reversal of 130752287 is 782257031.

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

It is not a de Polignac number, because 130752287 - 22 = 130752283 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 (130752283) 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, 4148 + ... + 16694.

It is an arithmetic number, because the mean of its divisors is an integer number (17335062).

Almost surely, 2130752287 is an apocalyptic number.

130752287 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

130752287 is a deficient number, since it is larger than the sum of its proper divisors (7928209).

130752287 is a wasteful number, since it uses less digits than its factorization.

130752287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13177.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 130752287 is about 11434.6966291196. The cubic root of 130752287 is about 507.5549854277.

The spelling of 130752287 in words is "one hundred thirty million, seven hundred fifty-two thousand, two hundred eighty-seven".

Divisors: 1 17 613 10421 12547 213299 7691311 130752287