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408231 = 3267677
BaseRepresentation
bin1100011101010100111
3202201222200
41203222213
5101030411
612425543
73320115
oct1435247
9681880
10408231
1125978a
121782b3
13113a75
14a8ab5
1580e56
hex63aa7

408231 has 12 divisors (see below), whose sum is σ = 599352. Its totient is φ = 267696.

The previous prime is 408229. The next prime is 408241. The reversal of 408231 is 132804.

It is a happy number.

It is not a de Polignac number, because 408231 - 21 = 408229 is a prime.

It is a super-2 number, since 2×4082312 = 333305098722, which contains 22 as substring.

408231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408211) 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, 265 + ... + 941.

It is an arithmetic number, because the mean of its divisors is an integer number (49946).

2408231 is an apocalyptic number.

408231 is a deficient number, since it is larger than the sum of its proper divisors (191121).

408231 is a wasteful number, since it uses less digits than its factorization.

408231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 408231 is about 638.9295735838. The cubic root of 408231 is about 74.1825902490.

The spelling of 408231 in words is "four hundred eight thousand, two hundred thirty-one".

Divisors: 1 3 9 67 201 603 677 2031 6093 45359 136077 408231