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130618312 = 23111978121
BaseRepresentation
bin1111100100100…
…01001111001000
3100002210002122021
413302101033020
5231414241222
620543334224
73144144256
oct762211710
9302702567
10130618312
1167804520
12378b1374
13210a4056
14134c15d6
15b701ac7
hex7c913c8

130618312 has 32 divisors (see below), whose sum is σ = 281239200. Its totient is φ = 56246400.

The previous prime is 130618307. The next prime is 130618339. The reversal of 130618312 is 213816031.

It is a super-2 number, since 2×1306183122 = 34122286859458688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37389 + ... + 40732.

It is an arithmetic number, because the mean of its divisors is an integer number (8788725).

Almost surely, 2130618312 is an apocalyptic number.

It is an amenable number.

130618312 is an abundant number, since it is smaller than the sum of its proper divisors (150620888).

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

130618312 is a wasteful number, since it uses less digits than its factorization.

130618312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78157 (or 78153 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 130618312 is about 11428.8368612033. The cubic root of 130618312 is about 507.3815712076.

The spelling of 130618312 in words is "one hundred thirty million, six hundred eighteen thousand, three hundred twelve".

Divisors: 1 2 4 8 11 19 22 38 44 76 88 152 209 418 836 1672 78121 156242 312484 624968 859331 1484299 1718662 2968598 3437324 5937196 6874648 11874392 16327289 32654578 65309156 130618312