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389648 = 247371
BaseRepresentation
bin1011111001000010000
3201210111102
41133020100
544432043
612203532
73212000
oct1371020
9653442
10389648
11246826
121695a8
1310847c
14a2000
157a6b8
hex5f210

389648 has 40 divisors (see below), whose sum is σ = 892800. Its totient is φ = 164640.

The previous prime is 389629. The next prime is 389651. The reversal of 389648 is 846983.

It is a nialpdrome in base 14.

It is an unprimeable number.

389648 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5453 + ... + 5523.

It is an arithmetic number, because the mean of its divisors is an integer number (22320).

2389648 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 389648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446400).

389648 is an abundant number, since it is smaller than the sum of its proper divisors (503152).

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

389648 is an equidigital number, since it uses as much as digits as its factorization.

389648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 80 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 389648 is about 624.2179106690. The cubic root of 389648 is about 73.0394482479.

The spelling of 389648 in words is "three hundred eighty-nine thousand, six hundred forty-eight".

Divisors: 1 2 4 7 8 14 16 28 49 56 71 98 112 142 196 284 343 392 497 568 686 784 994 1136 1372 1988 2744 3479 3976 5488 6958 7952 13916 24353 27832 48706 55664 97412 194824 389648