Search a number
-
+
130120712 = 233721092
BaseRepresentation
bin1111100000101…
…11110000001000
3100001211211001122
413300113300020
5231302330322
620524534412
73140002451
oct760276010
9301754048
10130120712
11674a4687
12376b1408
1320c5b707
14133d2128
15b654442
hex7c17c08

130120712 has 36 divisors (see below), whose sum is σ = 253070055. Its totient is φ = 62721216.

The previous prime is 130120691. The next prime is 130120741. The reversal of 130120712 is 217021031.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 128006596 + 2114116 = 11314^2 + 1454^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=8066.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1193714 + ... + 1193822.

Almost surely, 2130120712 is an apocalyptic number.

It is an amenable number.

130120712 is a deficient number, since it is larger than the sum of its proper divisors (122949343).

130120712 is an equidigital number, since it uses as much as digits as its factorization.

130120712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 130120712 is about 11407.0465941014. The cubic root of 130120712 is about 506.7364489143.

Adding to 130120712 its reverse (217021031), we get a palindrome (347141743).

The spelling of 130120712 in words is "one hundred thirty million, one hundred twenty thousand, seven hundred twelve".

Divisors: 1 2 4 8 37 74 109 148 218 296 436 872 1369 2738 4033 5476 8066 10952 11881 16132 23762 32264 47524 95048 149221 298442 439597 596884 879194 1193768 1758388 3516776 16265089 32530178 65060356 130120712