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11812808 = 237210943
BaseRepresentation
bin101101000011…
…111111001000
3211020011010102
4231003333020
511011002213
61101104532
7202256450
oct55037710
924204112
1011812808
116739157
123b58148
1325a7a37
1417d6d60
151085158
hexb43fc8

11812808 has 16 divisors (see below), whose sum is σ = 25313280. Its totient is φ = 5062608.

The previous prime is 11812793. The next prime is 11812811. The reversal of 11812808 is 80821811.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 105416 + ... + 105527.

It is an arithmetic number, because the mean of its divisors is an integer number (1582080).

Almost surely, 211812808 is an apocalyptic number.

It is an amenable number.

11812808 is an abundant number, since it is smaller than the sum of its proper divisors (13500472).

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

11812808 is a wasteful number, since it uses less digits than its factorization.

11812808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210956 (or 210952 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 29.

The square root of 11812808 is about 3436.9765783316. The cubic root of 11812808 is about 227.7461522796.

The spelling of 11812808 in words is "eleven million, eight hundred twelve thousand, eight hundred eight".

Divisors: 1 2 4 7 8 14 28 56 210943 421886 843772 1476601 1687544 2953202 5906404 11812808