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1030256 = 24193389
BaseRepresentation
bin11111011100001110000
31221100020122
43323201300
5230432011
634025412
711520443
oct3734160
91840218
101030256
11644057
12418268
132a0c26
141cb65a
151553db
hexfb870

1030256 has 20 divisors (see below), whose sum is σ = 2101800. Its totient is φ = 487872.

The previous prime is 1030247. The next prime is 1030291. The reversal of 1030256 is 6520301.

It is a super-2 number, since 2×10302562 = 2122854851072, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1391 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (105090).

21030256 is an apocalyptic number.

1030256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1030256 is an abundant number, since it is smaller than the sum of its proper divisors (1071544).

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

1030256 is a wasteful number, since it uses less digits than its factorization.

1030256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416 (or 3410 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1030256 is about 1015.0152708211. The cubic root of 1030256 is about 100.9985295345.

Adding to 1030256 its reverse (6520301), we get a palindrome (7550557).

The spelling of 1030256 in words is "one million, thirty thousand, two hundred fifty-six".

Divisors: 1 2 4 8 16 19 38 76 152 304 3389 6778 13556 27112 54224 64391 128782 257564 515128 1030256