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68849510 = 258977359
BaseRepresentation
bin1000001101010…
…00111101100110
311210112220202212
410012220331212
5120111141020
610455403422
71464132302
oct406507546
9153486685
1068849510
1135955724
121b083572
1311357c72
149202d02
15609ecc5
hex41a8f66

68849510 has 16 divisors (see below), whose sum is σ = 125323200. Its totient is φ = 27230016.

The previous prime is 68849503. The next prime is 68849531. The reversal of 68849510 is 1594886.

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, 37790 + ... + 39569.

It is an arithmetic number, because the mean of its divisors is an integer number (7832700).

Almost surely, 268849510 is an apocalyptic number.

68849510 is a deficient number, since it is larger than the sum of its proper divisors (56473690).

68849510 is a wasteful number, since it uses less digits than its factorization.

68849510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77455.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 68849510 is about 8297.5604848654. The cubic root of 68849510 is about 409.8581901001.

The spelling of 68849510 in words is "sixty-eight million, eight hundred forty-nine thousand, five hundred ten".

Divisors: 1 2 5 10 89 178 445 890 77359 154718 386795 773590 6884951 13769902 34424755 68849510