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578085287 = 13211330271
BaseRepresentation
bin100010011101001…
…110000110100111
31111021202202221012
4202131032012213
52140442212122
6133210212435
720216433563
oct4235160647
91437682835
10578085287
1127735003a
1214172411b
13929c4b00
1456ac06a3
1535b3e7e2
hex2274e1a7

578085287 has 12 divisors (see below), whose sum is σ = 631534464. Its totient is φ = 528877440.

The previous prime is 578085259. The next prime is 578085301. The reversal of 578085287 is 782580875.

578085287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 578085287 - 28 = 578085031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578085247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3962 + ... + 34232.

It is an arithmetic number, because the mean of its divisors is an integer number (52627872).

Almost surely, 2578085287 is an apocalyptic number.

578085287 is a deficient number, since it is larger than the sum of its proper divisors (53449177).

578085287 is a wasteful number, since it uses less digits than its factorization.

578085287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30410 (or 30397 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 50.

The square root of 578085287 is about 24043.4042306825. The cubic root of 578085287 is about 833.0363875159.

The spelling of 578085287 in words is "five hundred seventy-eight million, eighty-five thousand, two hundred eighty-seven".

Divisors: 1 13 113 169 1469 19097 30271 393523 3420623 5115799 44468099 578085287