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12250479 = 315127043
BaseRepresentation
bin101110101110…
…110101101111
3212001101111110
4232232311233
511114003404
61114323103
7206061453
oct56566557
925041443
1012250479
116a07a6a
124129493
1326cc007
1418ac663
15111eb89
hexbaed6f

12250479 has 8 divisors (see below), whose sum is σ = 16442752. Its totient is φ = 8112600.

The previous prime is 12250477. The next prime is 12250493. The reversal of 12250479 is 97405221.

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

It is not a de Polignac number, because 12250479 - 21 = 12250477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12250471) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13069 + ... + 13974.

It is an arithmetic number, because the mean of its divisors is an integer number (2055344).

Almost surely, 212250479 is an apocalyptic number.

12250479 is a deficient number, since it is larger than the sum of its proper divisors (4192273).

12250479 is a wasteful number, since it uses less digits than its factorization.

12250479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27197.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 12250479 is about 3500.0684279025. The cubic root of 12250479 is about 230.5248191882.

The spelling of 12250479 in words is "twelve million, two hundred fifty thousand, four hundred seventy-nine".

Divisors: 1 3 151 453 27043 81129 4083493 12250479