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130986878 = 2115953949
BaseRepresentation
bin1111100111010…
…11001101111110
3100010110211012212
413303223031332
5232013040003
620555300422
73150240641
oct763531576
9303424185
10130986878
1167a36420
1237a4a712
13211a2a39
1413579a58
15b775dd8
hex7ceb37e

130986878 has 8 divisors (see below), whose sum is σ = 214342200. Its totient is φ = 59539480.

The previous prime is 130986871. The next prime is 130986883. The reversal of 130986878 is 878689031.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130986871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2976953 + ... + 2976996.

It is an arithmetic number, because the mean of its divisors is an integer number (26792775).

Almost surely, 2130986878 is an apocalyptic number.

130986878 is a deficient number, since it is larger than the sum of its proper divisors (83355322).

130986878 is a wasteful number, since it uses less digits than its factorization.

130986878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5953962.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 130986878 is about 11444.9498906723. The cubic root of 130986878 is about 507.8583496394.

The spelling of 130986878 in words is "one hundred thirty million, nine hundred eighty-six thousand, eight hundred seventy-eight".

Divisors: 1 2 11 22 5953949 11907898 65493439 130986878