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8343980 = 225795281
BaseRepresentation
bin11111110101000110101100
3120200220210022
4133311012230
54114001410
6454501312
7130631321
oct37650654
916626708
108343980
114789a57
122964838
131961b88
141172b48
15aec455
hex7f51ac

8343980 has 24 divisors (see below), whose sum is σ = 17747520. Its totient is φ = 3294720.

The previous prime is 8343971. The next prime is 8343989. The reversal of 8343980 is 893438.

It is an interprime number because it is at equal distance from previous prime (8343971) and next prime (8343989).

It is a self number, because there is not a number n which added to its sum of digits gives 8343980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8343989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1061 + ... + 4220.

It is an arithmetic number, because the mean of its divisors is an integer number (739480).

Almost surely, 28343980 is an apocalyptic number.

It is an amenable number.

8343980 is an abundant number, since it is smaller than the sum of its proper divisors (9403540).

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

8343980 is a wasteful number, since it uses less digits than its factorization.

8343980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369 (or 5367 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 8343980 is about 2888.5948140921. The cubic root of 8343980 is about 202.8263700121.

The spelling of 8343980 in words is "eight million, three hundred forty-three thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 79 158 316 395 790 1580 5281 10562 21124 26405 52810 105620 417199 834398 1668796 2085995 4171990 8343980