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12020430 = 235400681
BaseRepresentation
bin101101110110…
…101011001110
3211121200221010
4231312223032
511034123210
61105350050
7204112662
oct55665316
924550833
1012020430
116870144
124038326
13264b3a6
14184c8a2
1510c6920
hexb76ace

12020430 has 16 divisors (see below), whose sum is σ = 28849104. Its totient is φ = 3205440.

The previous prime is 12020417. The next prime is 12020431. The reversal of 12020430 is 3402021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200311 + ... + 200370.

It is an arithmetic number, because the mean of its divisors is an integer number (1803069).

Almost surely, 212020430 is an apocalyptic number.

12020430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020430 is an abundant number, since it is smaller than the sum of its proper divisors (16828674).

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

12020430 is a wasteful number, since it uses less digits than its factorization.

12020430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400691.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12020430 is about 3467.0491776149. The cubic root of 12020430 is about 229.0726999144.

Adding to 12020430 its reverse (3402021), we get a palindrome (15422451).

The spelling of 12020430 in words is "twelve million, twenty thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 400681 801362 1202043 2003405 2404086 4006810 6010215 12020430