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857494089 = 324322272
BaseRepresentation
bin110011000111000…
…101001001001001
32012202112012202100
4303013011021021
53224004302324
6221031024013
730151402524
oct6307051111
92182465670
10857494089
11400040001
121bb20b009
1310886336a
1481c53bbb
15504324c9
hex331c5249

857494089 has 27 divisors (see below), whose sum is σ = 1273688013. Its totient is φ = 555908472.

The previous prime is 857494067. The next prime is 857494091. The reversal of 857494089 is 980494758.

The square root of 857494089 is 29283.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 857494089 - 27 = 857493961 is a prime.

It is a super-2 number, since 2×8574940892 = 1470592225339879842, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (857494009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3777394 + ... + 3777620.

Almost surely, 2857494089 is an apocalyptic number.

857494089 is the 29283-rd square number.

857494089 is the 14642-nd centered octagonal number.

It is an amenable number.

857494089 is a deficient number, since it is larger than the sum of its proper divisors (416193924).

857494089 is an equidigital number, since it uses as much as digits as its factorization.

857494089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The cubic root of 857494089 is about 950.0439828205.

The spelling of 857494089 in words is "eight hundred fifty-seven million, four hundred ninety-four thousand, eighty-nine".

Divisors: 1 3 9 43 129 227 387 681 1849 2043 5547 9761 16641 29283 51529 87849 154587 419723 463761 1259169 2215747 3777507 6647241 19941723 95277121 285831363 857494089