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513426 = 2385571

513426 has 8 divisors (see below), whose sum is σ = 1026864. Its totient is φ = 171140.

The previous prime is 513419. The next prime is 513427. The reversal of 513426 is 624315.

Subtracting 513426 from its reverse (624315), we obtain a square (110889 = 3332).

It can be divided in two parts, 513 and 426, that added together give a palindrome (939).

It is a happy number.

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

513426 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (513427) by changing a digit.

513426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42780 + ... + 42791.

It is an arithmetic number, because the mean of its divisors is an integer number (128358).

2513426 is an apocalyptic number.

513426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

513426 is a wasteful number, since it uses less digits than its factorization.

513426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85576.

The product of its digits is 720, while the sum is 21.

The square root of 513426 is about 716.5375077412. The cubic root of 513426 is about 80.0742019879.

The spelling of 513426 in words is "five hundred thirteen thousand, four hundred twenty-six".

Divisors: 1 2 3 6 85571 171142 256713 513426