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11912664 = 233716991
BaseRepresentation
bin101101011100…
…010111011000
3211102020002210
4231130113120
511022201124
61103155120
7203153541
oct55342730
924366083
1011912664
1167a7185
123ba5aa0
13261131a
1418214c8
1510a4a29
hexb5c5d8

11912664 has 32 divisors (see below), whose sum is σ = 30205440. Its totient is φ = 3914400.

The previous prime is 11912633. The next prime is 11912669. The reversal of 11912664 is 46621911.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11912669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1792 + ... + 5199.

It is an arithmetic number, because the mean of its divisors is an integer number (943920).

Almost surely, 211912664 is an apocalyptic number.

It is an amenable number.

11912664 is an abundant number, since it is smaller than the sum of its proper divisors (18292776).

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

11912664 is a wasteful number, since it uses less digits than its factorization.

11912664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7071 (or 7067 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 11912664 is about 3451.4727291404. The cubic root of 11912664 is about 228.3860802478.

The spelling of 11912664 in words is "eleven million, nine hundred twelve thousand, six hundred sixty-four".

Divisors: 1 2 3 4 6 8 12 24 71 142 213 284 426 568 852 1704 6991 13982 20973 27964 41946 55928 83892 167784 496361 992722 1489083 1985444 2978166 3970888 5956332 11912664