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12254430 = 2351921499
BaseRepresentation
bin101110101111…
…110011011110
3212001120220210
4232233303132
511114120210
61114353250
7206106126
oct56576336
925046823
1012254430
116a0aa31
12412b826
132700a56
1418adc86
151120e20
hexbafcde

12254430 has 32 divisors (see below), whose sum is σ = 30960000. Its totient is φ = 3095712.

The previous prime is 12254419. The next prime is 12254447. The reversal of 12254430 is 3445221.

It is a junction number, because it is equal to n+sod(n) for n = 12254397 and 12254406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10180 + ... + 11319.

It is an arithmetic number, because the mean of its divisors is an integer number (967500).

Almost surely, 212254430 is an apocalyptic number.

12254430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12254430 is an abundant number, since it is smaller than the sum of its proper divisors (18705570).

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

12254430 is a wasteful number, since it uses less digits than its factorization.

12254430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21528.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 12254430 is about 3500.6327999377. The cubic root of 12254430 is about 230.5495993257.

Adding to 12254430 its reverse (3445221), we get a palindrome (15699651).

The spelling of 12254430 in words is "twelve million, two hundred fifty-four thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 21499 42998 64497 107495 128994 214990 322485 408481 644970 816962 1225443 2042405 2450886 4084810 6127215 12254430