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680280212 = 22672538359
BaseRepresentation
bin101000100011000…
…100000010010100
31202102001211000102
4220203010002110
52343122431322
6151300433232
722600200143
oct5043040224
91672054012
10680280212
1131a000657
1216b9a8818
13aac26691
14664c375a
153eac9792
hex288c4094

680280212 has 12 divisors (see below), whose sum is σ = 1208259360. Its totient is φ = 335063256.

The previous prime is 680280197. The next prime is 680280233. The reversal of 680280212 is 212082086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268912 + ... + 1269447.

It is an arithmetic number, because the mean of its divisors is an integer number (100688280).

Almost surely, 2680280212 is an apocalyptic number.

It is an amenable number.

680280212 is a deficient number, since it is larger than the sum of its proper divisors (527979148).

680280212 is a wasteful number, since it uses less digits than its factorization.

680280212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538430 (or 2538428 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 680280212 is about 26082.1818872578. The cubic root of 680280212 is about 879.4867065142.

The spelling of 680280212 in words is "six hundred eighty million, two hundred eighty thousand, two hundred twelve".

Divisors: 1 2 4 67 134 268 2538359 5076718 10153436 170070053 340140106 680280212