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204044131220 = 22521794682059
BaseRepresentation
bin1011111000000111111…
…0100101101110010100
3201111200012000211121012
42332001332211232110
511320340244144340
6233423033511352
720512255333016
oct2760176455624
9644605024535
10204044131220
1179597657906
1233665b72558
131631a122927
149c392421b6
155493515565
hex2f81fa5b94

204044131220 has 24 divisors (see below), whose sum is σ = 428689413600. Its totient is φ = 81580178592.

The previous prime is 204044131211. The next prime is 204044131237. The reversal of 204044131220 is 22131440402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2297450 + ... + 2384609.

It is an arithmetic number, because the mean of its divisors is an integer number (17862058900).

Almost surely, 2204044131220 is an apocalyptic number.

204044131220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204044131220 is an abundant number, since it is smaller than the sum of its proper divisors (224645282380).

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

204044131220 is a wasteful number, since it uses less digits than its factorization.

204044131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684247 (or 4684245 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 204044131220 its reverse (22131440402), we get a palindrome (226175571622).

The spelling of 204044131220 in words is "two hundred four billion, forty-four million, one hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 2179 4358 8716 10895 21790 43580 4682059 9364118 18728236 23410295 46820590 93641180 10202206561 20404413122 40808826244 51011032805 102022065610 204044131220