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389688 = 233131249
BaseRepresentation
bin1011111001000111000
3201210112220
41133020320
544432223
612204040
73212055
oct1371070
9653486
10389688
11246862
12169620
131084b0
14a202c
157a6e3
hex5f238

389688 has 32 divisors (see below), whose sum is σ = 1050000. Its totient is φ = 119808.

The previous prime is 389687. The next prime is 389699. The reversal of 389688 is 886983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389687) 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, 313 + ... + 936.

2389688 is an apocalyptic number.

It is an amenable number.

389688 is an abundant number, since it is smaller than the sum of its proper divisors (660312).

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

389688 is a wasteful number, since it uses less digits than its factorization.

389688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271 (or 1267 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 389688 is about 624.2499499399. The cubic root of 389688 is about 73.0419474933.

The spelling of 389688 in words is "three hundred eighty-nine thousand, six hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 1249 2498 3747 4996 7494 9992 14988 16237 29976 32474 48711 64948 97422 129896 194844 389688