Search a number
-
+
68404710 = 23511207287
BaseRepresentation
bin1000001001111…
…00010111100110
311202201022121210
410010330113212
5120002422320
610442052250
71460300433
oct404742746
9152638553
1068404710
1135681520
121aaaa086
131123067a
149128b8a
1560130e0
hex413c5e6

68404710 has 32 divisors (see below), whose sum is σ = 179096832. Its totient is φ = 16582880.

The previous prime is 68404681. The next prime is 68404711. The reversal of 68404710 is 1740486.

It is a super-3 number, since 3×684047103 (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68404711) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 103314 + ... + 103973.

It is an arithmetic number, because the mean of its divisors is an integer number (5596776).

Almost surely, 268404710 is an apocalyptic number.

68404710 is an abundant number, since it is smaller than the sum of its proper divisors (110692122).

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

68404710 is a wasteful number, since it uses less digits than its factorization.

68404710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207308.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 68404710 is about 8270.7139957805. The cubic root of 68404710 is about 408.9736573960.

The spelling of 68404710 in words is "sixty-eight million, four hundred four thousand, seven hundred ten".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 207287 414574 621861 1036435 1243722 2072870 2280157 3109305 4560314 6218610 6840471 11400785 13680942 22801570 34202355 68404710