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389673 = 32291493
BaseRepresentation
bin1011111001000101001
3201210112100
41133020221
544432143
612204013
73212034
oct1371051
9653470
10389673
11246849
12169609
1310849b
14a201b
157a6d3
hex5f229

389673 has 12 divisors (see below), whose sum is σ = 582660. Its totient is φ = 250656.

The previous prime is 389663. The next prime is 389687. The reversal of 389673 is 376983.

It can be written as a sum of positive squares in 2 ways, for example, as 278784 + 110889 = 528^2 + 333^2 .

It is not a de Polignac number, because 389673 - 29 = 389161 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 486 + ... + 1007.

It is an arithmetic number, because the mean of its divisors is an integer number (48555).

2389673 is an apocalyptic number.

It is an amenable number.

389673 is a deficient number, since it is larger than the sum of its proper divisors (192987).

389673 is a wasteful number, since it uses less digits than its factorization.

389673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1525 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 389673 is about 624.2379354060. The cubic root of 389673 is about 73.0410102963.

It can be divided in two parts, 3896 and 73, that added together give a square (3969 = 632).

The spelling of 389673 in words is "three hundred eighty-nine thousand, six hundred seventy-three".

Divisors: 1 3 9 29 87 261 1493 4479 13437 43297 129891 389673