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130812342 = 2343949663
BaseRepresentation
bin1111100110000…
…00100110110110
3100010010221210120
413303000212312
5231441443332
620551432410
73145613043
oct763004666
9303127716
10130812342
1167927281
1237985706
132114146b
14135321ca
15b73e32c
hex7cc09b6

130812342 has 16 divisors (see below), whose sum is σ = 262225920. Its totient is φ = 43503912.

The previous prime is 130812323. The next prime is 130812349. The reversal of 130812342 is 243218031.

It is a super-2 number, since 2×1308123422 = 34223737639049928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130812349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22198 + ... + 27465.

It is an arithmetic number, because the mean of its divisors is an integer number (16389120).

Almost surely, 2130812342 is an apocalyptic number.

130812342 is an abundant number, since it is smaller than the sum of its proper divisors (131413578).

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

130812342 is a wasteful number, since it uses less digits than its factorization.

130812342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50107.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 130812342 is about 11437.3223264888. The cubic root of 130812342 is about 507.6326808160.

The spelling of 130812342 in words is "one hundred thirty million, eight hundred twelve thousand, three hundred forty-two".

Divisors: 1 2 3 6 439 878 1317 2634 49663 99326 148989 297978 21802057 43604114 65406171 130812342