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679387380 = 223571617589
BaseRepresentation
bin101000011111101…
…010000011110100
31202100101110021120
4220133222003310
52342410344010
6151225343540
722556461140
oct5037520364
91670343246
10679387380
11319550881
1216b637bb0
13aa9a3189
1466330220
153e99ee70
hex287ea0f4

679387380 has 48 divisors (see below), whose sum is σ = 2174040960. Its totient is φ = 155288448.

The previous prime is 679387369. The next prime is 679387417. The reversal of 679387380 is 83783976.

679387380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808375 + ... + 809214.

It is an arithmetic number, because the mean of its divisors is an integer number (45292520).

Almost surely, 2679387380 is an apocalyptic number.

679387380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

679387380 is an abundant number, since it is smaller than the sum of its proper divisors (1494653580).

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

679387380 is a wasteful number, since it uses less digits than its factorization.

679387380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617608 (or 1617606 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 679387380 is about 26065.0605217022. The cubic root of 679387380 is about 879.1017780499.

The spelling of 679387380 in words is "six hundred seventy-nine million, three hundred eighty-seven thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 1617589 3235178 4852767 6470356 8087945 9705534 11323123 16175890 19411068 22646246 24263835 32351780 33969369 45292492 48527670 56615615 67938738 97055340 113231230 135877476 169846845 226462460 339693690 679387380