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130139379 = 351971397
BaseRepresentation
bin1111100000111…
…00010011110011
3100001212202200000
413300130103303
5231303430004
620525201043
73140111046
oct760342363
9301782600
10130139379
1167507707
1237700183
1320c67066
14133d8c5d
15b659c39
hex7c1c4f3

130139379 has 48 divisors (see below), whose sum is σ = 208615680. Its totient is φ = 80831520.

The previous prime is 130139377. The next prime is 130139389. The reversal of 130139379 is 973931031.

It is not a de Polignac number, because 130139379 - 21 = 130139377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130139377) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 327609 + ... + 328005.

It is an arithmetic number, because the mean of its divisors is an integer number (4346160).

Almost surely, 2130139379 is an apocalyptic number.

130139379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

130139379 is a deficient number, since it is larger than the sum of its proper divisors (78476301).

130139379 is an equidigital number, since it uses as much as digits as its factorization.

130139379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 36.

The square root of 130139379 is about 11407.8647870669. The cubic root of 130139379 is about 506.7606797403.

The spelling of 130139379 in words is "one hundred thirty million, one hundred thirty-nine thousand, three hundred seventy-nine".

Divisors: 1 3 9 19 27 57 71 81 171 213 243 397 513 639 1191 1349 1539 1917 3573 4047 4617 5751 7543 10719 12141 17253 22629 28187 32157 36423 67887 84561 96471 109269 203661 253683 327807 535553 610983 761049 1606659 1832949 2283147 4819977 6849441 14459931 43379793 130139379