Search a number
-
+
130518836 = 22723389521
BaseRepresentation
bin1111100011110…
…00111100110100
3100002121001011222
413301320330310
5231403100321
620541245512
73143251250
oct761707464
9302531158
10130518836
1167746808
1237863898
132106a9a6
1413497260
15b6d23ab
hex7c78f34

130518836 has 48 divisors (see below), whose sum is σ = 273611520. Its totient is φ = 53264640.

The previous prime is 130518811. The next prime is 130518851. The reversal of 130518836 is 638815031.

It is a junction number, because it is equal to n+sod(n) for n = 130518796 and 130518805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250256 + ... + 250776.

It is an arithmetic number, because the mean of its divisors is an integer number (5700240).

Almost surely, 2130518836 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 130518836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136805760).

130518836 is an abundant number, since it is smaller than the sum of its proper divisors (143092684).

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

130518836 is a wasteful number, since it uses less digits than its factorization.

130518836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 130518836 is about 11424.4840583722. The cubic root of 130518836 is about 507.2527349909.

The spelling of 130518836 in words is "one hundred thirty million, five hundred eighteen thousand, eight hundred thirty-six".

Divisors: 1 2 4 7 14 23 28 46 92 161 322 389 521 644 778 1042 1556 2084 2723 3647 5446 7294 8947 10892 11983 14588 17894 23966 35788 47932 62629 83881 125258 167762 202669 250516 335524 405338 810676 1418683 2837366 4661387 5674732 9322774 18645548 32629709 65259418 130518836