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383825 = 52131181
BaseRepresentation
bin1011101101101010001
3201111111202
41131231101
544240300
612120545
73156011
oct1355521
9644452
10383825
11242412
12166155
13105920
149dc41
1578ad5
hex5db51

383825 has 12 divisors (see below), whose sum is σ = 512988. Its totient is φ = 283200.

The previous prime is 383821. The next prime is 383833. The reversal of 383825 is 528383.

It can be written as a sum of positive squares in 6 ways, for example, as 3136 + 380689 = 56^2 + 617^2 .

It is not a de Polignac number, because 383825 - 22 = 383821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383821) 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 11 ways as a sum of consecutive naturals, for example, 266 + ... + 915.

It is an arithmetic number, because the mean of its divisors is an integer number (42749).

2383825 is an apocalyptic number.

It is an amenable number.

383825 is a deficient number, since it is larger than the sum of its proper divisors (129163).

383825 is a wasteful number, since it uses less digits than its factorization.

383825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1199 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 383825 is about 619.5361167842. The cubic root of 383825 is about 72.6737805042.

The spelling of 383825 in words is "three hundred eighty-three thousand, eight hundred twenty-five".

Divisors: 1 5 13 25 65 325 1181 5905 15353 29525 76765 383825