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130168785 = 3510618179
BaseRepresentation
bin1111100001000…
…11011111010001
3100001221021000010
413300203133101
5231310400120
620525545133
73140262555
oct760433721
9301837003
10130168785
116752780a
12377151a9
1320c77566
1413405865
15b6637e0
hex7c237d1

130168785 has 16 divisors (see below), whose sum is σ = 208491840. Its totient is φ = 69349440.

The previous prime is 130168763. The next prime is 130168789. The reversal of 130168785 is 587861031.

It is not a de Polignac number, because 130168785 - 28 = 130168529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130168789) 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, 11826 + ... + 20004.

It is an arithmetic number, because the mean of its divisors is an integer number (13030740).

Almost surely, 2130168785 is an apocalyptic number.

130168785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130168785 is a deficient number, since it is larger than the sum of its proper divisors (78323055).

130168785 is a wasteful number, since it uses less digits than its factorization.

130168785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9248.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 130168785 is about 11409.1535619431. The cubic root of 130168785 is about 506.7988456985.

The spelling of 130168785 in words is "one hundred thirty million, one hundred sixty-eight thousand, seven hundred eighty-five".

Divisors: 1 3 5 15 1061 3183 5305 8179 15915 24537 40895 122685 8677919 26033757 43389595 130168785