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130855989 = 31117322921
BaseRepresentation
bin1111100110010…
…11010000110101
3100010020011200010
413303023100311
5231444342424
620552410433
73146154225
oct763132065
9303204603
10130855989
1167957050
12379a6a19
13211582a4
1413544085
15b74c229
hex7ccb435

130855989 has 16 divisors (see below), whose sum is σ = 191444544. Its totient is φ = 78844800.

The previous prime is 130855973. The next prime is 130855999. The reversal of 130855989 is 989558031.

It is not a de Polignac number, because 130855989 - 24 = 130855973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130855999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5752 + ... + 17169.

It is an arithmetic number, because the mean of its divisors is an integer number (11965284).

Almost surely, 2130855989 is an apocalyptic number.

It is an amenable number.

130855989 is a deficient number, since it is larger than the sum of its proper divisors (60588555).

130855989 is a wasteful number, since it uses less digits than its factorization.

130855989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23108.

The product of its (nonzero) digits is 388800, while the sum is 48.

The square root of 130855989 is about 11439.2302625657. The cubic root of 130855989 is about 507.6891336437.

The spelling of 130855989 in words is "one hundred thirty million, eight hundred fifty-five thousand, nine hundred eighty-nine".

Divisors: 1 3 11 33 173 519 1903 5709 22921 68763 252131 756393 3965333 11895999 43618663 130855989