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8407980 = 2232576673
BaseRepresentation
bin100000000100…
…101110101100
3120211011120200
4200010232230
54123023410
6500113500
7131316030
oct40045654
916734520
108407980
114823049
122995890
131985049
14118c1c0
15b113c0
hex804bac

8407980 has 72 divisors (see below), whose sum is σ = 29152032. Its totient is φ = 1921536.

The previous prime is 8407969. The next prime is 8407981. The reversal of 8407980 is 897048.

8407980 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (8407981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2077 + ... + 4596.

Almost surely, 28407980 is an apocalyptic number.

It is an amenable number.

8407980 is an abundant number, since it is smaller than the sum of its proper divisors (20744052).

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

8407980 is a wasteful number, since it uses less digits than its factorization.

8407980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6695 (or 6690 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 8407980 is about 2899.6517032223. The cubic root of 8407980 is about 203.3436227586.

The spelling of 8407980 in words is "eight million, four hundred seven thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1260 6673 13346 20019 26692 33365 40038 46711 60057 66730 80076 93422 100095 120114 133460 140133 186844 200190 233555 240228 280266 300285 400380 420399 467110 560532 600570 700665 840798 934220 1201140 1401330 1681596 2101995 2802660 4203990 8407980