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130861078 = 265430539
BaseRepresentation
bin1111100110011…
…00100000010110
3100010020102122121
413303030200112
5232000023303
620552450154
73146205115
oct763144026
9303212577
10130861078
116795a957
12379a995a
132115a6ba
1413545c7c
15b74d9bd
hex7ccc816

130861078 has 4 divisors (see below), whose sum is σ = 196291620. Its totient is φ = 65430538.

The previous prime is 130861067. The next prime is 130861091. The reversal of 130861078 is 870168031.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32715268 + ... + 32715271.

It is an arithmetic number, because the mean of its divisors is an integer number (49072905).

Almost surely, 2130861078 is an apocalyptic number.

130861078 is a deficient number, since it is larger than the sum of its proper divisors (65430542).

130861078 is an equidigital number, since it uses as much as digits as its factorization.

130861078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65430541.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 130861078 is about 11439.4526966984. The cubic root of 130861078 is about 507.6957149156.

The spelling of 130861078 in words is "one hundred thirty million, eight hundred sixty-one thousand, seventy-eight".

Divisors: 1 2 65430539 130861078