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30905952200 = 23523124012
BaseRepresentation
bin11100110010001000…
…110110011111001000
32221202220000001011022
4130302020312133020
51001243410432300
622110433452012
72142610154624
oct346210663710
987686001138
1030905952200
111211a671362
125ba6411008
132bb6c93aa6
1416d28b4184
15c0d42e285
hex7322367c8

30905952200 has 108 divisors (see below), whose sum is σ = 74434679235. Its totient is φ = 11933760000.

The previous prime is 30905952193. The next prime is 30905952251. The reversal of 30905952200 is 225950903.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 29133710596 + 1772241604 = 170686^2 + 42098^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=124310.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 77072000 + ... + 77072400.

Almost surely, 230905952200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30905952200

30905952200 is an abundant number, since it is smaller than the sum of its proper divisors (43528727035).

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

30905952200 is an equidigital number, since it uses as much as digits as its factorization.

30905952200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 35.

The spelling of 30905952200 in words is "thirty billion, nine hundred five million, nine hundred fifty-two thousand, two hundred".

Divisors: 1 2 4 5 8 10 20 25 31 40 50 62 100 124 155 200 248 310 401 620 775 802 961 1240 1550 1604 1922 2005 3100 3208 3844 4010 4805 6200 7688 8020 9610 10025 12431 16040 19220 20050 24025 24862 38440 40100 48050 49724 62155 80200 96100 99448 124310 160801 192200 248620 310775 321602 385361 497240 621550 643204 770722 804005 1243100 1286408 1541444 1608010 1926805 2486200 3082888 3216020 3853610 4020025 4984831 6432040 7707220 8040050 9634025 9969662 15414440 16080100 19268050 19939324 24924155 32160200 38536100 39878648 49848310 77072200 99696620 124620775 154529761 199393240 249241550 309059522 498483100 618119044 772648805 996966200 1236238088 1545297610 3090595220 3863244025 6181190440 7726488050 15452976100 30905952200