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385770 = 235711167
BaseRepresentation
bin1011110001011101010
3201121011210
41132023222
544321040
612133550
73164460
oct1361352
9647153
10385770
11243920
121672b6
13106788
14a0830
1579480
hex5e2ea

385770 has 64 divisors (see below), whose sum is σ = 1161216. Its totient is φ = 79680.

The previous prime is 385741. The next prime is 385771. The reversal of 385770 is 77583.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (385771) by changing a digit.

385770 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2227 + ... + 2393.

It is an arithmetic number, because the mean of its divisors is an integer number (18144).

2385770 is an apocalyptic number.

385770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 385770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580608).

385770 is an abundant number, since it is smaller than the sum of its proper divisors (775446).

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

385770 is a wasteful number, since it uses less digits than its factorization.

385770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 385770 is about 621.1038560499. The cubic root of 385770 is about 72.7963297671.

The spelling of 385770 in words is "three hundred eighty-five thousand, seven hundred seventy".

Divisors: 1 2 3 5 6 7 10 11 14 15 21 22 30 33 35 42 55 66 70 77 105 110 154 165 167 210 231 330 334 385 462 501 770 835 1002 1155 1169 1670 1837 2310 2338 2505 3507 3674 5010 5511 5845 7014 9185 11022 11690 12859 17535 18370 25718 27555 35070 38577 55110 64295 77154 128590 192885 385770