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389272 = 231319197
BaseRepresentation
bin1011111000010011000
3201202222111
41133002120
544424042
612202104
73210622
oct1370230
9652874
10389272
11246514
12169334
13108250
14a1c12
157a517
hex5f098

389272 has 32 divisors (see below), whose sum is σ = 831600. Its totient is φ = 169344.

The previous prime is 389269. The next prime is 389273. The reversal of 389272 is 272983.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1878 + ... + 2074.

2389272 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 389272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415800).

389272 is an abundant number, since it is smaller than the sum of its proper divisors (442328).

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

389272 is a wasteful number, since it uses less digits than its factorization.

389272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 231 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 389272 is about 623.9166611015. The cubic root of 389272 is about 73.0159469759.

The spelling of 389272 in words is "three hundred eighty-nine thousand, two hundred seventy-two".

Divisors: 1 2 4 8 13 19 26 38 52 76 104 152 197 247 394 494 788 988 1576 1976 2561 3743 5122 7486 10244 14972 20488 29944 48659 97318 194636 389272