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130523757 = 37131792671
BaseRepresentation
bin1111100011110…
…10001001101101
3100002121021221020
413301322021231
5231403230012
620541324353
73143301510
oct761721155
9302537836
10130523757
116774a481
12378666b9
132106ccc0
1413498d77
15b6d3a8c
hex7c7a26d

130523757 has 32 divisors (see below), whose sum is σ = 215470080. Its totient is φ = 68437440.

The previous prime is 130523737. The next prime is 130523779. The reversal of 130523757 is 757325031.

It is not a de Polignac number, because 130523757 - 211 = 130521709 is a prime.

It is a super-2 number, since 2×1305237572 = 34072902282790098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130523737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47532 + ... + 50202.

It is an arithmetic number, because the mean of its divisors is an integer number (6733440).

Almost surely, 2130523757 is an apocalyptic number.

It is an amenable number.

130523757 is a deficient number, since it is larger than the sum of its proper divisors (84946323).

130523757 is a wasteful number, since it uses less digits than its factorization.

130523757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873.

The product of its (nonzero) digits is 22050, while the sum is 33.

The square root of 130523757 is about 11424.6994271184. The cubic root of 130523757 is about 507.2591099567.

Adding to 130523757 its reverse (757325031), we get a palindrome (887848788).

The spelling of 130523757 in words is "one hundred thirty million, five hundred twenty-three thousand, seven hundred fifty-seven".

Divisors: 1 3 7 13 21 39 91 179 273 537 1253 2327 2671 3759 6981 8013 16289 18697 34723 48867 56091 104169 243061 478109 729183 1434327 3346763 6215417 10040289 18646251 43507919 130523757