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130556487 = 3231892123
BaseRepresentation
bin1111100100000…
…10001001000111
3100002122221211110
413302002021013
5231410301422
620542140103
73143466105
oct762021107
9302587743
10130556487
1167772026
1237881633
1321081b79
14134a6c75
15b6dd60c
hex7c82247

130556487 has 8 divisors (see below), whose sum is σ = 181643904. Its totient is φ = 83253368.

The previous prime is 130556449. The next prime is 130556497. The reversal of 130556487 is 784655031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130556487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130556417) 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, 945993 + ... + 946130.

It is an arithmetic number, because the mean of its divisors is an integer number (22705488).

Almost surely, 2130556487 is an apocalyptic number.

130556487 is a deficient number, since it is larger than the sum of its proper divisors (51087417).

130556487 is a wasteful number, since it uses less digits than its factorization.

130556487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892149.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 130556487 is about 11426.1317601365. The cubic root of 130556487 is about 507.3015063334.

The spelling of 130556487 in words is "one hundred thirty million, five hundred fifty-six thousand, four hundred eighty-seven".

Divisors: 1 3 23 69 1892123 5676369 43518829 130556487