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10681280 = 265291151
BaseRepresentation
bin101000101111…
…101111000000
3202002122221222
4220233233000
510213300110
61020534212
7156534521
oct50575700
922078858
1010681280
116036005
1236b1368
13229c9ac
1415c0848
15e0ec55
hexa2fbc0

10681280 has 56 divisors (see below), whose sum is σ = 26334720. Its totient is φ = 4121600.

The previous prime is 10681277. The next prime is 10681289. The reversal of 10681280 is 8218601.

10681280 = 2232 + 2242 + ... + 3502.

10681280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×106812802 = 228179484876800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10681289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8705 + ... + 9855.

Almost surely, 210681280 is an apocalyptic number.

10681280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10681280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13167360).

10681280 is an abundant number, since it is smaller than the sum of its proper divisors (15653440).

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

10681280 is a wasteful number, since it uses less digits than its factorization.

10681280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1187 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 10681280 is about 3268.2227586259. Note that the first 3 decimals coincide. The cubic root of 10681280 is about 220.2289627287.

Adding to 10681280 its reverse (8218601), we get a palindrome (18899881).

The spelling of 10681280 in words is "ten million, six hundred eighty-one thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 29 32 40 58 64 80 116 145 160 232 290 320 464 580 928 1151 1160 1856 2302 2320 4604 4640 5755 9208 9280 11510 18416 23020 33379 36832 46040 66758 73664 92080 133516 166895 184160 267032 333790 368320 534064 667580 1068128 1335160 2136256 2670320 5340640 10681280