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12253445 = 517913691
BaseRepresentation
bin101110101111…
…100100000101
3212001112120022
4232233210011
511114102240
61114344525
7206103221
oct56574405
925045508
1012253445
116a0a216
12412b145
132700479
1418ad781
1511209b5
hexbaf905

12253445 has 8 divisors (see below), whose sum is σ = 14787360. Its totient is φ = 9747280.

The previous prime is 12253427. The next prime is 12253469. The reversal of 12253445 is 54435221.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2k-12253445 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 5951 + ... + 7740.

It is an arithmetic number, because the mean of its divisors is an integer number (1848420).

Almost surely, 212253445 is an apocalyptic number.

It is an amenable number.

12253445 is a deficient number, since it is larger than the sum of its proper divisors (2533915).

12253445 is a wasteful number, since it uses less digits than its factorization.

12253445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13875.

The product of its digits is 4800, while the sum is 26.

The square root of 12253445 is about 3500.4921082614. The cubic root of 12253445 is about 230.5434220374.

Adding to 12253445 its reverse (54435221), we get a palindrome (66688666).

The spelling of 12253445 in words is "twelve million, two hundred fifty-three thousand, four hundred forty-five".

Divisors: 1 5 179 895 13691 68455 2450689 12253445