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130000878 = 23271031753
BaseRepresentation
bin1111011111110…
…10011111101110
3100001121201200100
413233322133232
5231240012003
620522211530
73135663210
oct757723756
9301551610
10130000878
1167422647
1237653ba6
1320c18cc7
14133a05b0
15b62dba3
hex7bfa7ee

130000878 has 24 divisors (see below), whose sum is σ = 321907248. Its totient is φ = 37143072.

The previous prime is 130000847. The next prime is 130000909. The reversal of 130000878 is 878000031.

It is an interprime number because it is at equal distance from previous prime (130000847) and next prime (130000909).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 515751 + ... + 516002.

It is an arithmetic number, because the mean of its divisors is an integer number (13412802).

Almost surely, 2130000878 is an apocalyptic number.

130000878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

130000878 is an abundant number, since it is smaller than the sum of its proper divisors (191906370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130000878 is a wasteful number, since it uses less digits than its factorization.

130000878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031768 (or 1031765 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 130000878 is about 11401.7927537734. The cubic root of 130000878 is about 506.5808423613.

The spelling of 130000878 in words is "one hundred thirty million, eight hundred seventy-eight", and thus it is an aban number.

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 1031753 2063506 3095259 6190518 7222271 9285777 14444542 18571554 21666813 43333626 65000439 130000878