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386838 = 23221491
BaseRepresentation
bin1011110011100010110
3201122122100
41132130112
544334323
612142530
73200544
oct1363426
9648570
10386838
11244701
12167a46
131070ca
14a0d94
1579943
hex5e716

386838 has 12 divisors (see below), whose sum is σ = 838188. Its totient is φ = 128940.

The previous prime is 386809. The next prime is 386839. The reversal of 386838 is 838683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10728 + ... + 10763.

It is an arithmetic number, because the mean of its divisors is an integer number (69849).

2386838 is an apocalyptic number.

386838 is an abundant number, since it is smaller than the sum of its proper divisors (451350).

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

386838 is a wasteful number, since it uses less digits than its factorization.

386838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21499 (or 21496 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 386838 is about 621.9630214088. The cubic root of 386838 is about 72.8634464805.

The spelling of 386838 in words is "three hundred eighty-six thousand, eight hundred thirty-eight".

Divisors: 1 2 3 6 9 18 21491 42982 64473 128946 193419 386838