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1027290 = 235112283
BaseRepresentation
bin11111010110011011010
31221012011210
43322303122
5230333130
634003550
711506005
oct3726332
91835153
101027290
11641900
124165b6
1329c784
141ca53c
151545b0
hexfacda

1027290 has 48 divisors (see below), whose sum is σ = 2719584. Its totient is φ = 248160.

The previous prime is 1027289. The next prime is 1027319. The reversal of 1027290 is 927201.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3489 + ... + 3771.

It is an arithmetic number, because the mean of its divisors is an integer number (56658).

21027290 is an apocalyptic number.

1027290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1027290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359792).

1027290 is an abundant number, since it is smaller than the sum of its proper divisors (1692294).

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

1027290 is a wasteful number, since it uses less digits than its factorization.

1027290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1027290 is about 1013.5531559815. The cubic root of 1027290 is about 100.9015149517.

The spelling of 1027290 in words is "one million, twenty-seven thousand, two hundred ninety".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 121 165 242 283 330 363 566 605 726 849 1210 1415 1698 1815 2830 3113 3630 4245 6226 8490 9339 15565 18678 31130 34243 46695 68486 93390 102729 171215 205458 342430 513645 1027290