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2268805 = 57117183
BaseRepresentation
bin1000101001111010000101
311021021012211
420221322011
51040100210
6120343421
725166410
oct10517205
94237184
102268805
11130a650
12914b71
136158b6
14430b77
152ec38a
hex229e85

2268805 has 32 divisors (see below), whose sum is σ = 3483648. Its totient is φ = 1377600.

The previous prime is 2268793. The next prime is 2268829. The reversal of 2268805 is 5088622.

It is not a de Polignac number, because 2268805 - 27 = 2268677 is a prime.

It is a super-2 number, since 2×22688052 = 10294952256050, which contains 22 as substring.

It is a d-powerful number, because it can be written as 25 + 217 + 65 + 85 + 87 + 0 + 5 .

2268805 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27294 + ... + 27376.

It is an arithmetic number, because the mean of its divisors is an integer number (108864).

22268805 is an apocalyptic number.

It is an amenable number.

2268805 is a deficient number, since it is larger than the sum of its proper divisors (1214843).

2268805 is a wasteful number, since it uses less digits than its factorization.

2268805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 2268805 is about 1506.2552904471. The cubic root of 2268805 is about 131.4011169474.

The spelling of 2268805 in words is "two million, two hundred sixty-eight thousand, eight hundred five".

Divisors: 1 5 7 11 35 55 71 77 83 355 385 415 497 581 781 913 2485 2905 3905 4565 5467 5893 6391 27335 29465 31955 41251 64823 206255 324115 453761 2268805