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68444510 = 256844451
BaseRepresentation
bin1000001010001…
…10000101011110
311202210100012212
410011012011132
5120010211020
610443000422
71460524451
oct405060536
9152710185
1068444510
11356a9412
121ab09112
1311245814
149139498
15601ecc5
hex414615e

68444510 has 8 divisors (see below), whose sum is σ = 123200136. Its totient is φ = 27377800.

The previous prime is 68444503. The next prime is 68444521. The reversal of 68444510 is 1544486.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable 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, 3422216 + ... + 3422235.

It is an arithmetic number, because the mean of its divisors is an integer number (15400017).

Almost surely, 268444510 is an apocalyptic number.

68444510 is a deficient number, since it is larger than the sum of its proper divisors (54755626).

68444510 is a wasteful number, since it uses less digits than its factorization.

68444510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844458.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 68444510 is about 8273.1197259559. The cubic root of 68444510 is about 409.0529599066.

Adding to 68444510 its reverse (1544486), we get a palindrome (69988996).

The spelling of 68444510 in words is "sixty-eight million, four hundred forty-four thousand, five hundred ten".

Divisors: 1 2 5 10 6844451 13688902 34222255 68444510