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130605748 = 227132231609
BaseRepresentation
bin1111100100011…
…10001010110100
3100002202110101221
413302032022310
5231413340443
620543200124
73144062530
oct762161264
9302673357
10130605748
11677a6039
12378a6044
132109b410
14134babc0
15b6eceed
hex7c8e2b4

130605748 has 48 divisors (see below), whose sum is σ = 282741760. Its totient is φ = 51404544.

The previous prime is 130605743. The next prime is 130605767. The reversal of 130605748 is 847506031.

It is a super-2 number, since 2×1306057482 = 34115722821279008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130605743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80368 + ... + 81976.

Almost surely, 2130605748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130605748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141370880).

130605748 is an abundant number, since it is smaller than the sum of its proper divisors (152136012).

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

130605748 is a wasteful number, since it uses less digits than its factorization.

130605748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856 (or 1854 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 130605748 is about 11428.2871857510. The cubic root of 130605748 is about 507.3653025687.

The spelling of 130605748 in words is "one hundred thirty million, six hundred five thousand, seven hundred forty-eight".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 223 364 446 892 1561 1609 2899 3122 3218 5798 6244 6436 11263 11596 20293 20917 22526 40586 41834 45052 81172 83668 146419 292838 358807 585676 717614 1435228 2511649 4664491 5023298 9328982 10046596 18657964 32651437 65302874 130605748