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130023312 = 2432708819
BaseRepresentation
bin1111011111111…
…11111110010000
3100001122212110020
413233333332100
5231241221222
620522503440
73136115466
oct757777620
9301585406
10130023312
1167438491
1237664b80
1320c26293
14133a8836
15b63565c
hex7bfff90

130023312 has 20 divisors (see below), whose sum is σ = 335893680. Its totient is φ = 43341088.

The previous prime is 130023277. The next prime is 130023317. The reversal of 130023312 is 213320031.

It is a junction number, because it is equal to n+sod(n) for n = 130023291 and 130023300.

It is not an unprimeable number, because it can be changed into a prime (130023317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1354362 + ... + 1354457.

It is an arithmetic number, because the mean of its divisors is an integer number (16794684).

Almost surely, 2130023312 is an apocalyptic number.

130023312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130023312 is an abundant number, since it is smaller than the sum of its proper divisors (205870368).

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

130023312 is a wasteful number, since it uses less digits than its factorization.

130023312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708830 (or 2708824 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 130023312 is about 11402.7765039924. The cubic root of 130023312 is about 506.6099805772.

Adding to 130023312 its reverse (213320031), we get a palindrome (343343343).

The spelling of 130023312 in words is "one hundred thirty million, twenty-three thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 48 2708819 5417638 8126457 10835276 16252914 21670552 32505828 43341104 65011656 130023312