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130166780 = 22510164439
BaseRepresentation
bin1111100001000…
…10111111111100
3100001221011020212
413300202333330
5231310314110
620525531552
73140253662
oct760427774
9301834225
10130166780
1167526257
1237713bb8
1320c76683
1413404c32
15b662e05
hex7c22ffc

130166780 has 24 divisors (see below), whose sum is σ = 276060960. Its totient is φ = 51550400.

The previous prime is 130166753. The next prime is 130166783. The reversal of 130166780 is 87661031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130166783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30200 + ... + 34239.

It is an arithmetic number, because the mean of its divisors is an integer number (11502540).

Almost surely, 2130166780 is an apocalyptic number.

130166780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130166780 is an abundant number, since it is smaller than the sum of its proper divisors (145894180).

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

130166780 is a wasteful number, since it uses less digits than its factorization.

130166780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64549 (or 64547 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 130166780 is about 11409.0656935614. The cubic root of 130166780 is about 506.7962435977.

The spelling of 130166780 in words is "one hundred thirty million, one hundred sixty-six thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 101 202 404 505 1010 2020 64439 128878 257756 322195 644390 1288780 6508339 13016678 26033356 32541695 65083390 130166780