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385678944 = 253271131693
BaseRepresentation
bin10110111111001…
…111111001100000
3222212201112001100
4112333033321200
51242213211234
6102134234400
712362134260
oct2677177140
9885645040
10385678944
11188784332
12a91b5a00
1361b98cc1
14393177a0
1523cd5399
hex16fcfe60

385678944 has 144 divisors (see below), whose sum is σ = 1265296032. Its totient is φ = 109154304.

The previous prime is 385678907. The next prime is 385678957. The reversal of 385678944 is 449876583.

385678944 is a `hidden beast` number, since 38 + 567 + 8 + 9 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226962 + ... + 228654.

It is an arithmetic number, because the mean of its divisors is an integer number (8786778).

Almost surely, 2385678944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385678944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632648016).

385678944 is an abundant number, since it is smaller than the sum of its proper divisors (879617088).

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

385678944 is a wasteful number, since it uses less digits than its factorization.

385678944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829 (or 1818 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 385678944 is about 19638.7103446229. The cubic root of 385678944 is about 727.9060177353.

The spelling of 385678944 in words is "three hundred eighty-five million, six hundred seventy-eight thousand, nine hundred forty-four".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 72 84 96 112 113 126 144 168 224 226 252 288 336 339 452 504 672 678 791 904 1008 1017 1356 1582 1693 1808 2016 2034 2373 2712 3164 3386 3616 4068 4746 5079 5424 6328 6772 7119 8136 9492 10158 10848 11851 12656 13544 14238 15237 16272 18984 20316 23702 25312 27088 28476 30474 32544 35553 37968 40632 47404 54176 56952 60948 71106 75936 81264 94808 106659 113904 121896 142212 162528 189616 191309 213318 227808 243792 284424 379232 382618 426636 487584 568848 573927 765236 853272 1137696 1147854 1339163 1530472 1706544 1721781 2295708 2678326 3060944 3413088 3443562 4017489 4591416 5356652 6121888 6887124 8034978 9182832 10713304 12052467 13774248 16069956 18365664 21426608 24104934 27548496 32139912 42853216 48209868 55096992 64279824 96419736 128559648 192839472 385678944