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557130380 = 225236771789
BaseRepresentation
bin100001001101010…
…010001010001100
31102211100011012112
4201031102022030
52120111133010
6131141123152
716543346552
oct4115221214
91384304175
10557130380
11266538334
121366b94b8
138b568b61
1453dc7bd2
1533da0a05
hex2135228c

557130380 has 48 divisors (see below), whose sum is σ = 1223328960. Its totient is φ = 212729088.

The previous prime is 557130359. The next prime is 557130391. The reversal of 557130380 is 83031755.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310526 + ... + 312314.

It is an arithmetic number, because the mean of its divisors is an integer number (25486020).

Almost surely, 2557130380 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 557130380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611664480).

557130380 is an abundant number, since it is smaller than the sum of its proper divisors (666198580).

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

557130380 is a wasteful number, since it uses less digits than its factorization.

557130380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 557130380 is about 23603.6094697400. The cubic root of 557130380 is about 822.8467288431.

The spelling of 557130380 in words is "five hundred fifty-seven million, one hundred thirty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 460 677 1354 1789 2708 3385 3578 6770 7156 8945 13540 15571 17890 31142 35780 41147 62284 77855 82294 155710 164588 205735 311420 411470 822940 1211153 2422306 4844612 6055765 12111530 24223060 27856519 55713038 111426076 139282595 278565190 557130380