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29302980 = 2235729967
BaseRepresentation
bin110111111001…
…0000011000100
32001010202010120
41233302003010
530000143410
62524021540
7504033300
oct157620304
961122116
1029302980
11155a4843
1299918b0
1360bc955
143c6ad00
15288c570
hex1bf20c4

29302980 has 72 divisors (see below), whose sum is σ = 95453568. Its totient is φ = 6697152.

The previous prime is 29302979. The next prime is 29302991. The reversal of 29302980 is 8920392.

29302980 is nontrivially palindromic in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2044 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (1325744).

Almost surely, 229302980 is an apocalyptic number.

29302980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29302980 is an abundant number, since it is smaller than the sum of its proper divisors (66150588).

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

29302980 is a wasteful number, since it uses less digits than its factorization.

29302980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9993 (or 9984 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 29302980 is about 5413.2227000189. Note that the first 3 decimals coincide. The cubic root of 29302980 is about 308.2979211015.

The spelling of 29302980 in words is "twenty-nine million, three hundred two thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 420 490 588 735 980 1470 2940 9967 19934 29901 39868 49835 59802 69769 99670 119604 139538 149505 199340 209307 279076 299010 348845 418614 488383 598020 697690 837228 976766 1046535 1395380 1465149 1953532 2093070 2441915 2930298 4186140 4883830 5860596 7325745 9767660 14651490 29302980