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130660838 = 27112337997
BaseRepresentation
bin1111100100110…
…11100111100110
3100002212020222022
413302123213212
5231422121323
620544303142
73144412250
oct762334746
9302766868
10130660838
1167833470
1237911ab2
13210ba509
14134d2cd0
15b70e4c8
hex7c9b9e6

130660838 has 64 divisors (see below), whose sum is σ = 262130688. Its totient is φ = 47329920.

The previous prime is 130660837. The next prime is 130660879. The reversal of 130660838 is 838066031.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 130660798 and 130660807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130660837) 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 31 ways as a sum of consecutive naturals, for example, 130556 + ... + 131552.

It is an arithmetic number, because the mean of its divisors is an integer number (4095792).

Almost surely, 2130660838 is an apocalyptic number.

130660838 is an abundant number, since it is smaller than the sum of its proper divisors (131469850).

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

130660838 is a wasteful number, since it uses less digits than its factorization.

130660838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 130660838 is about 11430.6971790875. The cubic root of 130660838 is about 507.4366287442.

The spelling of 130660838 in words is "one hundred thirty million, six hundred sixty thousand, eight hundred thirty-eight".

Divisors: 1 2 7 11 14 22 23 37 46 74 77 154 161 253 259 322 407 506 518 814 851 997 1702 1771 1994 2849 3542 5698 5957 6979 9361 10967 11914 13958 18722 21934 22931 36889 45862 65527 73778 76769 131054 153538 160517 252241 258223 321034 405779 504482 516446 811558 848447 1696894 1765687 2840453 3531374 5680906 5939129 9332917 11878258 18665834 65330419 130660838