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130508785 = 51122383113
BaseRepresentation
bin1111100011101…
…10011111110001
3100002120112101201
413301312133301
5231402240120
620541131201
73143210041
oct761663761
9302515351
10130508785
116773a200
1237859b01
1321066244
1413493721
15b6ce40a
hex7c767f1

130508785 has 48 divisors (see below), whose sum is σ = 183399552. Its totient is φ = 88901120.

The previous prime is 130508773. The next prime is 130508789. The reversal of 130508785 is 587805031.

It is not a de Polignac number, because 130508785 - 211 = 130506737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130508789) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1154889 + ... + 1155001.

It is an arithmetic number, because the mean of its divisors is an integer number (3820824).

Almost surely, 2130508785 is an apocalyptic number.

It is an amenable number.

130508785 is a deficient number, since it is larger than the sum of its proper divisors (52890767).

130508785 is a wasteful number, since it uses less digits than its factorization.

130508785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 130508785 is about 11424.0441613292. The cubic root of 130508785 is about 507.2397138100.

The spelling of 130508785 in words is "one hundred thirty million, five hundred eight thousand, seven hundred eighty-five".

Divisors: 1 5 11 23 55 83 113 115 121 253 415 565 605 913 1243 1265 1909 2599 2783 4565 6215 9379 9545 10043 12995 13673 13915 20999 28589 46895 50215 68365 103169 104995 142945 215717 230989 314479 515845 1078585 1134859 1154945 1572395 2372887 5674295 11864435 26101757 130508785