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387142241684 = 221147187206113
BaseRepresentation
bin1011010001000110111…
…10011100110110010100
31101000021121102120102212
411220203132130312110
522320331403213214
6453503425452552
736653513521112
oct5504336346624
91330247376385
10387142241684
1113a205780260
12630451a1158
132a679880123
1414a486a2ab2
15a10cbe253e
hex5a2379cd94

387142241684 has 24 divisors (see below), whose sum is σ = 754815051648. Its totient is φ = 172229623040.

The previous prime is 387142241677. The next prime is 387142241687. The reversal of 387142241684 is 486142241783.

It is a happy number.

It is a super-2 number, since 2×3871422416842 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387142241687) 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, 93600989 + ... + 93605124.

It is an arithmetic number, because the mean of its divisors is an integer number (31450627152).

Almost surely, 2387142241684 is an apocalyptic number.

It is an amenable number.

387142241684 is a deficient number, since it is larger than the sum of its proper divisors (367672809964).

387142241684 is a wasteful number, since it uses less digits than its factorization.

387142241684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187206175 (or 187206173 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 50.

Subtracting 387142241684 from its reverse (486142241783), we obtain a palindrome (99000000099).

It can be divided in two parts, 387142 and 241684, that added together give a palindrome (628826).

The spelling of 387142241684 in words is "three hundred eighty-seven billion, one hundred forty-two million, two hundred forty-one thousand, six hundred eighty-four".

Divisors: 1 2 4 11 22 44 47 94 188 517 1034 2068 187206113 374412226 748824452 2059267243 4118534486 8237068972 8798687311 17597374622 35194749244 96785560421 193571120842 387142241684