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1840806 = 234111033
BaseRepresentation
bin111000001011010100110
310110112010000
413001122212
5432401211
6103242130
721434532
oct7013246
93415100
101840806
111048030
12749346
134c5b46
1435cbc2
15265656
hex1c16a6

1840806 has 40 divisors (see below), whose sum is σ = 4504104. Its totient is φ = 557280.

The previous prime is 1840789. The next prime is 1840829. The reversal of 1840806 is 6080481.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1840806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1266 + ... + 2298.

21840806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1840806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2252052).

1840806 is an abundant number, since it is smaller than the sum of its proper divisors (2663298).

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

1840806 is a wasteful number, since it uses less digits than its factorization.

1840806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1840806 is about 1356.7630596386. The cubic root of 1840806 is about 122.5564032915.

The spelling of 1840806 in words is "one million, eight hundred forty thousand, eight hundred six".

Divisors: 1 2 3 6 9 11 18 22 27 33 54 66 81 99 162 198 297 594 891 1033 1782 2066 3099 6198 9297 11363 18594 22726 27891 34089 55782 68178 83673 102267 167346 204534 306801 613602 920403 1840806