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68831184 = 24310491367
BaseRepresentation
bin1000001101001…
…00011111010000
311210111222122010
410012210133100
5120110044214
610455142520
71464025002
oct406443720
9153458563
1068831184
1135942984
121b074a40
131134c816
1491da372
156099659
hex41a47d0

68831184 has 40 divisors (see below), whose sum is σ = 178113600. Its totient is φ = 22905088.

The previous prime is 68831179. The next prime is 68831219. The reversal of 68831184 is 48113886.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 49669 + ... + 51035.

It is an arithmetic number, because the mean of its divisors is an integer number (4452840).

Almost surely, 268831184 is an apocalyptic number.

It is an amenable number.

68831184 is an abundant number, since it is smaller than the sum of its proper divisors (109282416).

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

68831184 is a wasteful number, since it uses less digits than its factorization.

68831184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427 (or 2421 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 68831184 is about 8296.4561108946. The cubic root of 68831184 is about 409.8218222416.

The spelling of 68831184 in words is "sixty-eight million, eight hundred thirty-one thousand, one hundred eighty-four".

Divisors: 1 2 3 4 6 8 12 16 24 48 1049 1367 2098 2734 3147 4101 4196 5468 6294 8202 8392 10936 12588 16404 16784 21872 25176 32808 50352 65616 1433983 2867966 4301949 5735932 8603898 11471864 17207796 22943728 34415592 68831184