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387242241152 = 2713242312
BaseRepresentation
bin1011010001010010110…
…11111010110010000000
31101000112120121001220212
411220221123322302000
522321033003204102
6453521401053252
736656136511544
oct5505133726200
91330476531825
10387242241152
1113a257171348
1263072787228
132a6944c3600
1414a57a93a24
15a116896c52
hex5a296fac80

387242241152 has 72 divisors (see below), whose sum is σ = 835564497345. Its totient is φ = 178684945920.

The previous prime is 387242241149. The next prime is 387242241157. The reversal of 387242241152 is 251142242783.

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 2 ways, for example, as 331103573056 + 56138668096 = 575416^2 + 236936^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=440024.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387242241157) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 91522877 + ... + 91527107.

Almost surely, 2387242241152 is an apocalyptic number.

387242241152 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387242241152

387242241152 is an abundant number, since it is smaller than the sum of its proper divisors (448322256193).

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

387242241152 is an frugal number, since it uses more digits than its factorization.

387242241152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8502 (or 4246 counting only the distinct ones).

The product of its digits is 215040, while the sum is 41.

The spelling of 387242241152 in words is "three hundred eighty-seven billion, two hundred forty-two million, two hundred forty-one thousand, one hundred fifty-two".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 128 169 208 338 416 676 832 1352 1664 2704 4231 5408 8462 10816 16924 21632 33848 55003 67696 110006 135392 220012 270784 440024 541568 715039 880048 1430078 1760096 2860156 3520192 5720312 7040384 11440624 17901361 22881248 35802722 45762496 71605444 91524992 143210888 232717693 286421776 465435386 572843552 930870772 1145687104 1861741544 2291374208 3025330009 3723483088 6050660018 7446966176 12101320036 14893932352 24202640072 29787864704 48405280144 96810560288 193621120576 387242241152