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279316420 = 22522362627
BaseRepresentation
bin10000101001100…
…000011111000100
3201110120202002121
4100221200133010
51033001111140
643414415324
76631102405
oct2051403704
9643522077
10279316420
11133737619
1279661544
1345b384b6
142914b9ac
15197c564a
hex10a607c4

279316420 has 24 divisors (see below), whose sum is σ = 589204224. Its totient is φ = 111223776.

The previous prime is 279316369. The next prime is 279316459. The reversal of 279316420 is 24613972.

279316420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 26854 + ... + 35773.

It is an arithmetic number, because the mean of its divisors is an integer number (24550176).

Almost surely, 2279316420 is an apocalyptic number.

279316420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279316420 is an abundant number, since it is smaller than the sum of its proper divisors (309887804).

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

279316420 is a wasteful number, since it uses less digits than its factorization.

279316420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62859 (or 62857 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 279316420 is about 16712.7621894168. The cubic root of 279316420 is about 653.6804387915.

The spelling of 279316420 in words is "two hundred seventy-nine million, three hundred sixteen thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 223 446 892 1115 2230 4460 62627 125254 250508 313135 626270 1252540 13965821 27931642 55863284 69829105 139658210 279316420