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385533 = 33109131
BaseRepresentation
bin1011110000111111101
3201120212000
41132013331
544314113
612132513
73164001
oct1360775
9646760
10385533
11243725
12167139
13106635
14a0701
1579373
hex5e1fd

385533 has 16 divisors (see below), whose sum is σ = 580800. Its totient is φ = 252720.

The previous prime is 385531. The next prime is 385537. The reversal of 385533 is 335583.

It is not a de Polignac number, because 385533 - 21 = 385531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 385497 and 385506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2878 + ... + 3008.

It is an arithmetic number, because the mean of its divisors is an integer number (36300).

2385533 is an apocalyptic number.

385533 is the 393-rd heptagonal number.

It is an amenable number.

385533 is a deficient number, since it is larger than the sum of its proper divisors (195267).

385533 is a wasteful number, since it uses less digits than its factorization.

385533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 243 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 385533 is about 620.9130373893. The cubic root of 385533 is about 72.7814190997.

The spelling of 385533 in words is "three hundred eighty-five thousand, five hundred thirty-three".

Divisors: 1 3 9 27 109 131 327 393 981 1179 2943 3537 14279 42837 128511 385533