Search a number
-
+
68409804 = 22319300043
BaseRepresentation
bin1000001001111…
…01100111001100
311202201120121110
410010331213030
5120003103204
610442132020
71460321331
oct404754714
9152646543
1068409804
1135685331
121aab1010
1311232a98
14912a988
156014889
hex413d9cc

68409804 has 24 divisors (see below), whose sum is σ = 168024640. Its totient is φ = 21603024.

The previous prime is 68409793. The next prime is 68409821. The reversal of 68409804 is 40890486.

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, 149794 + ... + 150249.

Almost surely, 268409804 is an apocalyptic number.

It is an amenable number.

68409804 is an abundant number, since it is smaller than the sum of its proper divisors (99614836).

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

68409804 is a wasteful number, since it uses less digits than its factorization.

68409804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300069 (or 300067 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 68409804 is about 8271.0219441131. The cubic root of 68409804 is about 408.9838090366.

The spelling of 68409804 in words is "sixty-eight million, four hundred nine thousand, eight hundred four".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 300043 600086 900129 1200172 1800258 3600516 5700817 11401634 17102451 22803268 34204902 68409804