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30980950 = 25271113619
BaseRepresentation
bin111011000101…
…1101101010110
32011021222212121
41312023231112
530412342300
63024010154
7524222320
oct166135526
964258777
1030980950
11165404a0
12a46095a
136559630
144186610
152abe81a
hex1d8bb56

30980950 has 96 divisors (see below), whose sum is σ = 77495040. Its totient is φ = 8899200.

The previous prime is 30980947. The next prime is 30980993. The reversal of 30980950 is 5908903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49741 + ... + 50359.

It is an arithmetic number, because the mean of its divisors is an integer number (807240).

Almost surely, 230980950 is an apocalyptic number.

30980950 is an abundant number, since it is smaller than the sum of its proper divisors (46514090).

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

30980950 is a wasteful number, since it uses less digits than its factorization.

30980950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 30980950 is about 5566.0533594280. The cubic root of 30980950 is about 314.0737044178.

The spelling of 30980950 in words is "thirty million, nine hundred eighty thousand, nine hundred fifty".

Divisors: 1 2 5 7 10 11 13 14 22 25 26 35 50 55 65 70 77 91 110 130 143 154 175 182 275 286 325 350 385 455 550 619 650 715 770 910 1001 1238 1430 1925 2002 2275 3095 3575 3850 4333 4550 5005 6190 6809 7150 8047 8666 10010 13618 15475 16094 21665 25025 30950 34045 40235 43330 47663 50050 56329 68090 80470 88517 95326 108325 112658 170225 177034 201175 216650 238315 281645 340450 402350 442585 476630 563290 619619 885170 1191575 1239238 1408225 2212925 2383150 2816450 3098095 4425850 6196190 15490475 30980950