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30241980 = 22325179883
BaseRepresentation
bin111001101011…
…1010010111100
32002220110012100
41303113102330
530220220410
63000105100
7515024016
oct163272274
962813170
1030241980
111608627a
12a165190
13635b182
1440331b6
1529c58c0
hex1cd74bc

30241980 has 72 divisors (see below), whose sum is σ = 97139952. Its totient is φ = 7589376.

The previous prime is 30241979. The next prime is 30241993. The reversal of 30241980 is 8914203.

It is a congruent number.

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, 1882 + ... + 8001.

It is an arithmetic number, because the mean of its divisors is an integer number (1349166).

Almost surely, 230241980 is an apocalyptic number.

30241980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30241980 is an abundant number, since it is smaller than the sum of its proper divisors (66897972).

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

30241980 is a wasteful number, since it uses less digits than its factorization.

30241980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9915 (or 9910 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 30241980 is about 5499.2708607596. The cubic root of 30241980 is about 311.5564456573.

The spelling of 30241980 in words is "thirty million, two hundred forty-one thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 17 18 20 30 34 36 45 51 60 68 85 90 102 153 170 180 204 255 306 340 510 612 765 1020 1530 3060 9883 19766 29649 39532 49415 59298 88947 98830 118596 148245 168011 177894 197660 296490 336022 355788 444735 504033 592980 672044 840055 889470 1008066 1512099 1680110 1778940 2016132 2520165 3024198 3360220 5040330 6048396 7560495 10080660 15120990 30241980