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11811830 = 251181183
BaseRepresentation
bin101101000011…
…101111110110
3211020002210012
4231003233312
511010434310
61101100222
7202253552
oct55035766
924202705
1011811830
116738448
123b57672
1325a7464
1417d6862
151084c05
hexb43bf6

11811830 has 8 divisors (see below), whose sum is σ = 21261312. Its totient is φ = 4724728.

The previous prime is 11811797. The next prime is 11811847. The reversal of 11811830 is 3811811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11811796 and 11811805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590582 + ... + 590601.

It is an arithmetic number, because the mean of its divisors is an integer number (2657664).

Almost surely, 211811830 is an apocalyptic number.

11811830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11811830 is a deficient number, since it is larger than the sum of its proper divisors (9449482).

11811830 is a wasteful number, since it uses less digits than its factorization.

11811830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181190.

The product of its (nonzero) digits is 192, while the sum is 23.

The square root of 11811830 is about 3436.8342991771. The cubic root of 11811830 is about 227.7398669582.

The spelling of 11811830 in words is "eleven million, eight hundred eleven thousand, eight hundred thirty".

Divisors: 1 2 5 10 1181183 2362366 5905915 11811830