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387834108 = 22373442733
BaseRepresentation
bin10111000111011…
…110000011111100
31000000210000101020
4113013132003330
51243241142413
6102252344140
712416351454
oct2707360374
91000700336
10387834108
11189a16562
12a9a75050
1362471c4c
1439718d64
15240adc23
hex171de0fc

387834108 has 24 divisors (see below), whose sum is σ = 917344848. Its totient is φ = 127506816.

The previous prime is 387834103. The next prime is 387834113. The reversal of 387834108 is 801438783.

It is an interprime number because it is at equal distance from previous prime (387834103) and next prime (387834113).

It is a self number, because there is not a number n which added to its sum of digits gives 387834108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387834101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220491 + ... + 222242.

It is an arithmetic number, because the mean of its divisors is an integer number (38222702).

Almost surely, 2387834108 is an apocalyptic number.

It is an amenable number.

387834108 is an abundant number, since it is smaller than the sum of its proper divisors (529510740).

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

387834108 is a wasteful number, since it uses less digits than its factorization.

387834108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442813 (or 442811 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 387834108 is about 19693.5042082408. The cubic root of 387834108 is about 729.2593401029.

The spelling of 387834108 in words is "three hundred eighty-seven million, eight hundred thirty-four thousand, one hundred eight".

Divisors: 1 2 3 4 6 12 73 146 219 292 438 876 442733 885466 1328199 1770932 2656398 5312796 32319509 64639018 96958527 129278036 193917054 387834108