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11912430 = 2351920899
BaseRepresentation
bin101101011100…
…010011101110
3211102012210010
4231130103232
511022144210
61103154050
7203153055
oct55342356
924365703
1011912430
1167a6a92
123ba5926
13261119a
14182139c
1510a4920
hexb5c4ee

11912430 has 32 divisors (see below), whose sum is σ = 30096000. Its totient is φ = 3009312.

The previous prime is 11912377. The next prime is 11912431. The reversal of 11912430 is 3421911.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11912397 and 11912406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11912431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9880 + ... + 11019.

It is an arithmetic number, because the mean of its divisors is an integer number (940500).

Almost surely, 211912430 is an apocalyptic number.

11912430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11912430 is an abundant number, since it is smaller than the sum of its proper divisors (18183570).

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

11912430 is a wasteful number, since it uses less digits than its factorization.

11912430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20928.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 11912430 is about 3451.4388304010. The cubic root of 11912430 is about 228.3845848450.

The spelling of 11912430 in words is "eleven million, nine hundred twelve thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 20899 41798 62697 104495 125394 208990 313485 397081 626970 794162 1191243 1985405 2382486 3970810 5956215 11912430